KDE 4.9 PyKDE API Reference

- KDE's Python API

# KCalendarSystem Class Reference

`from PyKDE4.kdecore import *`

## Detailed Description

KCalendarSystem abstract base class, provides support for local Calendar Systems in KDE

Derived classes must be created through the create() static method

## Enumerations
MonthNameFormat | { ShortName, LongName, ShortNamePossessive, LongNamePossessive, NarrowName }
StringFormat | { ShortFormat, LongFormat }
WeekDayNameFormat | { ShortDayName, LongDayName, NarrowDayName }
## Methods
| __init__ (self, KLocale locale=0)
| __init__ (self, KCalendarSystem a0)
| __init__ (self, KSharedPtr config, KLocale locale=0)
QDate | addDays (self, QDate date, int ndays)
QDate | addMonths (self, QDate date, int nmonths)
QDate | addYears (self, QDate date, int nyears)
int | applyShortYearWindow (self, int inputYear)
QString | calendarLabel (self)
KLocale.CalendarSystem | calendarSystem (self)
QString | calendarType (self)
| dateDifference (self, QDate fromDate, QDate toDate, int yearsDiff, int monthsDiff, int daysDiff, int direction)
bool, int jd | dateToJulianDay (self, int year, int month, int day)
int | day (self, QDate date)
int | dayOfWeek (self, QDate date)
QString | dayOfWeekString (self, QDate pDate)
int | dayOfYear (self, QDate date)
QString | dayOfYearString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
QString | dayString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int, int iLength | dayStringToInteger (self, QString sNum)
int | daysDifference (self, QDate fromDate, QDate toDate)
int | daysInMonth (self, QDate date)
int | daysInMonth (self, int year, int month)
QString | daysInMonthString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int | daysInWeek (self, QDate date)
QString | daysInWeekString (self, QDate date)
int | daysInYear (self, QDate date)
int | daysInYear (self, int year)
QString | daysInYearString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
QDate | earliestValidDate (self)
QDate | epoch (self)
QString | eraName (self, QDate date, KCalendarSystem.StringFormat format=KCalendarSystem.ShortFormat)
QString | eraYear (self, QDate date, KCalendarSystem.StringFormat format=KCalendarSystem.ShortFormat)
QDate | firstDayOfMonth (self, int year, int month)
QDate | firstDayOfMonth (self, QDate date=QDate.currentDate())
QDate | firstDayOfYear (self, int year)
QDate | firstDayOfYear (self, QDate date=QDate.currentDate())
QString | formatDate (self, QDate fromDate, KLocale.DateFormat toFormat=KLocale.LongDate)
QString | formatDate (self, QDate fromDate, QString toFormat, KLocale.DateTimeFormatStandard formatStandard=KLocale.KdeFormat)
QString | formatDate (self, QDate fromDate, QString toFormat, KLocale.DigitSet digitSet, KLocale.DateTimeFormatStandard formatStandard=KLocale.KdeFormat)
QString | formatDate (self, QDate date, KLocale.DateTimeComponent component, KLocale.DateTimeComponentFormat format=KLocale.DefaultComponentFormat, KLocale.WeekNumberSystem weekNumberSystem=KLocale.DefaultWeekNumber)
| getDate (self, QDate date, int year, int month, int day)
bool | isLeapYear (self, int year)
bool | isLeapYear (self, QDate date)
bool | isLunar (self)
bool | isLunisolar (self)
bool | isProleptic (self)
bool | isSolar (self)
bool | isValid (self, int year, int month, int day)
bool | isValid (self, QDate date)
bool | isValid (self, int year, int dayOfYear)
bool | isValid (self, QString eraName, int yearInEra, int month, int day)
bool | isValidIsoWeekDate (self, int year, int isoWeekNumber, int dayOfIsoWeek)
bool, int year, int month, int day | julianDayToDate (self, int jd)
QDate | lastDayOfMonth (self, int year, int month)
QDate | lastDayOfMonth (self, QDate date=QDate.currentDate())
QDate | lastDayOfYear (self, int year)
QDate | lastDayOfYear (self, QDate date=QDate.currentDate())
QDate | latestValidDate (self)
KLocale | locale (self)
int | month (self, QDate date)
QString | monthName (self, int month, int year, KCalendarSystem.MonthNameFormat format=KCalendarSystem.LongName)
QString | monthName (self, QDate date, KCalendarSystem.MonthNameFormat format=KCalendarSystem.LongName)
QString | monthString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int, int iLength | monthStringToInteger (self, QString sNum)
int | monthsDifference (self, QDate fromDate, QDate toDate)
int | monthsInYear (self, QDate date)
int | monthsInYear (self, int year)
QString | monthsInYearString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
QDate, bool ok | readDate (self, QString str)
QDate, bool ok | readDate (self, QString dateString, QString dateFormat)
QDate, bool ok | readDate (self, QString str, KLocale.ReadDateFlags flags)
QDate | readDate (self, QString dateString, QString dateFormat, bool ok, KLocale.DateTimeFormatStandard formatStandard)
bool | setDate (self, QDate date, int year, int month, int day)
bool | setDate (self, QDate date, int year, int dayOfYear)
bool | setDate (self, QDate date, QString eraName, int yearInEra, int month, int day)
bool | setDateIsoWeek (self, QDate date, int year, int isoWeekNumber, int dayOfIsoWeek)
| setHasYear0 (self, bool hasYear0)
| setMaxDaysInWeek (self, int maxDays)
| setMaxMonthsInYear (self, int maxMonths)
bool | setYMD (self, QDate date, int y, int m, int d)
int | shortYearWindowStartYear (self)
int | week (self, QDate date, int yearNum=0)
int | week (self, QDate date, KLocale.WeekNumberSystem weekNumberSystem, int yearNum=0)
QString | weekDayName (self, int weekDay, KCalendarSystem.WeekDayNameFormat format=KCalendarSystem.LongDayName)
QString | weekDayName (self, QDate date, KCalendarSystem.WeekDayNameFormat format=KCalendarSystem.LongDayName)
int | weekDayOfPray (self)
int, int yearNum | weekNumber (self, QDate date, int yearNum=0)
QString | weekNumberString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int | weekStartDay (self)
int | weeksInYear (self, QDate date)
int | weeksInYear (self, int year)
int | weeksInYear (self, int year, KLocale.WeekNumberSystem weekNumberSystem)
QString | weeksInYearString (self, QDate pDate, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int | year (self, QDate date)
int | yearInEra (self, QDate date)
QString | yearInEraString (self, QDate date, KCalendarSystem.StringFormat format=KCalendarSystem.ShortFormat)
QString | yearString (self, QDate date, KCalendarSystem.StringFormat format=KCalendarSystem.LongFormat)
int, int iLength | yearStringToInteger (self, QString sNum)
int | yearsDifference (self, QDate fromDate, QDate toDate)
## Static Methods
QString | calendarLabel (QString calendarType)
QString | calendarLabel (KLocale.CalendarSystem calendarSystem, KLocale locale=KGlobal.locale())
KLocale.CalendarSystem | calendarSystem (QString calendarType)
KLocale.CalendarSystem | calendarSystemForCalendarType (QString calendarType)
QStringList | calendarSystems ()
[KLocale.CalendarSystem] | calendarSystemsList ()
QString | calendarType (KLocale.CalendarSystem calendarSystem)
KCalendarSystem | create (QString calType=QLatin1String("gregorian"), KLocale locale=0)
KCalendarSystem | create (QString calType, KSharedPtr config, KLocale locale=0)
KCalendarSystem | create (KLocale.CalendarSystem calendarSystem, KLocale locale=0)
KCalendarSystem | create (KLocale.CalendarSystem calendarSystem, KSharedPtr config, KLocale locale=0)

## Method Documentation

__init__ | ( | self, |
|  | KLocale | locale=0
| ) |  |  |

Constructor of abstract calendar class. This will be called by derived classes.

Parameters:

  | locale | locale to use for translations. The global locale is used if null.

__init__ | ( | self, |
|  | KCalendarSystem | a0
| ) |  |  |

__init__ | ( | self, |
|  | KSharedPtr | config,
|  | KLocale | locale=0
| ) |  |  |

Constructor of abstract calendar class. This will be called by derived classes.

Parameters:

  | config | a configuration file with a 'KCalendarSystem %calendarName' group detailing locale-related preferences (such as era options). The global config is used if null.
  | locale | locale to use for translations. The global locale is used if null.

QDate addDays | ( | self, |
|  | QDate | date,
|  | int | ndays
| ) |  |  |

Returns a QDate containing a date ndays days later.

Parameters:

  | date | The old date
  | ndays | number of days to add

Returns:
  The new date, null date if any errors

QDate addMonths | ( | self, |
|  | QDate | date,
|  | int | nmonths
| ) |  |  |

Returns a QDate containing a date nmonths months later.

Parameters:

  | date | The old date
  | nmonths | number of months to add

Returns:
  The new date, null date if any errors

QDate addYears | ( | self, |
|  | QDate | date,
|  | int | nyears
| ) |  |  |

Returns a QDate containing a date nyears years later.

Parameters:

  | date | The old date
  | nyears | The number of years to add

Returns:
  The new date, null date if any errors

int applyShortYearWindow | ( | self, |
|  | int | inputYear
| ) |  |  |

Since:
  4.6

Returns the Year Number after applying the Year Window.

If the inputYear is between 0 and 99, then apply the Year Window and return the calculated Year Number.

If the inputYear is not between 0 and 99, then the original Year Number is returned.

See also:
  KLocale.setYearWindowOffset

See also:
  KLocale.yearWindowOffset

Parameters:

  | inputYear | the year number to apply the year window to

Returns:
  the year number after applying the year window

QString calendarLabel | ( |  | self ) |

Since:
  4.6

Returns a localized label to display for the current Calendar System type.

Returns:
  localized label for this Calendar System

KLocale.CalendarSystem calendarSystem | ( |  | self ) |

Since:
  4.6

Returns the Calendar System type of the KCalendarSystem object

Returns:
  type of calendar system

QString calendarType | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Deprecated:
  use calendarSystem() instead

Returns the calendar system type.

Returns:
  type of calendar system

dateDifference | ( | self, |
|  | QDate | fromDate,
|  | QDate | toDate,
|  | int | yearsDiff,
|  | int | monthsDiff,
|  | int | daysDiff,
|  | int | direction
| ) |  |  |

Returns the difference between two dates in years, months and days. The difference is always caculated from the earlier date to the later date in year, month and day order, with the direction parameter indicating which direction the difference is applied from the toDate.

For example, the difference between 2010-06-10 and 2012-09-5 is 2 years, 2 months and 26 days. Note that the difference between two last days of the month is always 1 month, e.g. 2010-01-31 to 2010-02-28 is 1 month not 28 days.

Parameters:

  | fromDate | The date to start from
  | toDate | The date to end at
  | yearsDiff | Returns number of years difference
  | monthsDiff | Returns number of months difference
  | daysDiff | Returns number of days difference
  | direction | Returns direction of difference, 1 if fromDate <= toDate, -1 otherwise

bool, int jd dateToJulianDay | ( | self, |
|  | int | year,
|  | int | month,
|  | int | day
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Internal method to convert YMD values for this calendar system into a Julian Day number.

All calendar system implementations MUST implement julianDayToDate and dateToJulianDay methods as all other methods can be expressed as functions of these. Does no internal validity checking.

See also:
  KCalendarSystem.julianDayToDate

Parameters:

  | year | year number
  | month | month number
  | day | day of month
  | jd | Julian day number returned in this variable

Returns:
  true if the date is valid, false otherwise

int day | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the day portion of a given date in the current calendar system

Parameters:

  | date | date to return day for

Returns:
  day of the month, 0 if input date is invalid

int dayOfWeek | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the weekday number for the given date

The weekdays are numbered 1..7 for Monday..Sunday.

This value is not affected by the value of weekStartDay()

Parameters:

  | date | the date to obtain day from

Returns:
  day of week number, -1 if input date not valid

QString dayOfWeekString | ( | self, |
|  | QDate | pDate
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Converts a date into a day of week literal

Parameters:

  | pDate | The date to convert

Returns:
  The day of week literal of the date, empty string if any error

See also:
  dayOfWeek()

int dayOfYear | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the day number of year for the given date

The days are numbered 1..daysInYear()

Parameters:

  | date | the date to obtain day from

Returns:
  day of year number, -1 if input date not valid

QString dayOfYearString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Converts a date into a day of year literal

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The day of year literal of the date, empty string if any error

See also:
  dayOfYear()

QString dayString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Converts a date into a day literal

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The day literal of the date, empty string if any error

See also:
  day()

int, int iLength dayStringToInteger | ( | self, |
|  | QString | sNum
| ) |  |  |

Deprecated:
  for internal use only

Converts a day literal of a part of a string into a integer starting at the beginning of the string

Parameters:

  | sNum | The string to parse
  | iLength | The number of QChars used, and 0 if no valid symbols was found in the string

Returns:
  An integer corresponding to the day

int daysDifference | ( | self, |
|  | QDate | fromDate,
|  | QDate | toDate
| ) |  |  |

Returns the difference between two dates in days The returned value will be negative if fromDate > toDate.

Parameters:

  | fromDate | The date to start from
  | toDate | The date to end at

Returns:
  The number of days difference

int daysInMonth | ( | self, |
|  | QDate | date
| ) |  |  |

Since:
  4.5

Returns the number of days in the given month.

Parameters:

  | year | the year the month is in
  | month | the month

Returns:
  number of days in month, -1 if input date invalid

int daysInMonth | ( | self, |
|  | int | year,
|  | int | month
| ) |  |  |

Since:
  4.5

Returns the number of days in the given month.

Parameters:

  | year | the year the month is in
  | month | the month

Returns:
  number of days in month, -1 if input date invalid

QString daysInMonthString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Returns the days in month for a date as a numeric string

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The days in month literal of the date, empty string if any error

See also:
  daysInMonth()

int daysInWeek | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the number of days in the given week.

Parameters:

  | date | the date to obtain week from

Returns:
  number of days in week, -1 if input date invalid

QString daysInWeekString | ( | self, |
|  | QDate | date
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Returns the days in week for a date as a numeric string

Parameters:

  | date | The date to convert

Returns:
  The days in week literal of the date, empty string if any error

See also:
  daysInWeek()

int daysInYear | ( | self, |
|  | QDate | date
| ) |  |  |

Since:
  4.5

Returns the number of days in the given year.

Parameters:

  | year | the year

Returns:
  number of days in year, -1 if input date invalid

int daysInYear | ( | self, |
|  | int | year
| ) |  |  |

Since:
  4.5

Returns the number of days in the given year.

Parameters:

  | year | the year

Returns:
  number of days in year, -1 if input date invalid

QString daysInYearString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Returns the days in year for a date as a numeric string

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The days in year literal of the date, empty string if any error

See also:
  daysInYear()

QDate earliestValidDate | ( |  | self ) |

Returns the earliest date valid in this calendar system implementation.

If the calendar system is proleptic then this may be before epoch.

See also:
  KCalendarSystem.epoch

See also:
  KCalendarSystem.latestValidDate

Returns:
  date the earliest valid date

QDate epoch | ( |  | self ) |

Returns a QDate holding the epoch of the calendar system. Usually YMD of 1/1/1, access the returned QDates method toJulianDay() if you require the actual Julian day number. Note: a particular calendar system implementation may not include the epoch in its supported range, or the calendar system may be proleptic in which case it supports dates before the epoch.

See also:
  KCalendarSystem.earliestValidDate

See also:
  KCalendarSystem.latestValidDate

See also:
  KCalendarSystem.isProleptic

See also:
  KCalendarSystem.isValid

Returns:
  epoch of calendar system

QString eraName | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.ShortFormat
| ) |  |  |

Since:
  4.5

Returns the Era Name portion of a given date in the current calendar system, for example "AD" or "Anno Domini" for the Gregorian calendar and Christian Era.

Parameters:

  | date | date to return Era Name for
  | format | format to return, either short or long

Returns:
  era name, empty string if input date is invalid

QString eraYear | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.ShortFormat
| ) |  |  |

Since:
  4.5

Returns the Era Year portion of a given date in the current calendar system, for example "2000 AD" or "Heisei 22".

Parameters:

  | date | date to return Era Year for
  | format | format to return, either short or long

Returns:
  era name, empty string if input date is invalid

QDate firstDayOfMonth | ( | self, |
|  | int | year,
|  | int | month
| ) |  |  |

Since:
  4.6

Returns a QDate containing the first day of the month

Parameters:

  | date | The month to return the date for, defaults to today

Returns:
  The first day of the month

QDate firstDayOfMonth | ( | self, |
|  | QDate | date=QDate.currentDate()
| ) |  |  |

Since:
  4.6

Returns a QDate containing the first day of the month

Parameters:

  | date | The month to return the date for, defaults to today

Returns:
  The first day of the month

QDate firstDayOfYear | ( | self, |
|  | int | year
| ) |  |  |

Since:
  4.6

Returns a QDate containing the first day of the year

Parameters:

  | date | The year to return the date for, defaults to today

Returns:
  The first day of the year

QDate firstDayOfYear | ( | self, |
|  | QDate | date=QDate.currentDate()
| ) |  |  |

Since:
  4.6

Returns a QDate containing the first day of the year

Parameters:

  | date | The year to return the date for, defaults to today

Returns:
  The first day of the year

QString formatDate | ( | self, |
|  | QDate | fromDate,
|  | KLocale.DateFormat | toFormat=KLocale.LongDate
| ) |  |  |

Since:
  4.6

Returns a Date Component as a localized string in the requested format.

For example for 2010-01-01 the KLocale.Month with en_US Locale and Gregorian calendar may return: KLocale.ShortNumber = "1" KLocale.LongNumber = "01" KLocale.NarrowName = "J" KLocale.ShortName = "Jan" KLocale.LongName = "January"

Parameters:

  | date | The date to format
  | component | The date component to return
  | format | The format to return the component in
  | weekNumberSystem | To override the default Week Number System to use

Returns:
  The localized string form of the date component

QString formatDate | ( | self, |
|  | QDate | fromDate,
|  | QString | toFormat,
|  | KLocale.DateTimeFormatStandard | formatStandard=KLocale.KdeFormat
| ) |  |  |

Since:
  4.6

Returns a Date Component as a localized string in the requested format.

For example for 2010-01-01 the KLocale.Month with en_US Locale and Gregorian calendar may return: KLocale.ShortNumber = "1" KLocale.LongNumber = "01" KLocale.NarrowName = "J" KLocale.ShortName = "Jan" KLocale.LongName = "January"

Parameters:

  | date | The date to format
  | component | The date component to return
  | format | The format to return the component in
  | weekNumberSystem | To override the default Week Number System to use

Returns:
  The localized string form of the date component

QString formatDate | ( | self, |
|  | QDate | fromDate,
|  | QString | toFormat,
|  | KLocale.DigitSet | digitSet,
|  | KLocale.DateTimeFormatStandard | formatStandard=KLocale.KdeFormat
| ) |  |  |

Since:
  4.6

Returns a Date Component as a localized string in the requested format.

For example for 2010-01-01 the KLocale.Month with en_US Locale and Gregorian calendar may return: KLocale.ShortNumber = "1" KLocale.LongNumber = "01" KLocale.NarrowName = "J" KLocale.ShortName = "Jan" KLocale.LongName = "January"

Parameters:

  | date | The date to format
  | component | The date component to return
  | format | The format to return the component in
  | weekNumberSystem | To override the default Week Number System to use

Returns:
  The localized string form of the date component

QString formatDate | ( | self, |
|  | QDate | date,
|  | KLocale.DateTimeComponent | component,
|  | KLocale.DateTimeComponentFormat | format=KLocale.DefaultComponentFormat,
|  | KLocale.WeekNumberSystem | weekNumberSystem=KLocale.DefaultWeekNumber
| ) |  |  |

Since:
  4.6

Returns a Date Component as a localized string in the requested format.

For example for 2010-01-01 the KLocale.Month with en_US Locale and Gregorian calendar may return: KLocale.ShortNumber = "1" KLocale.LongNumber = "01" KLocale.NarrowName = "J" KLocale.ShortName = "Jan" KLocale.LongName = "January"

Parameters:

  | date | The date to format
  | component | The date component to return
  | format | The format to return the component in
  | weekNumberSystem | To override the default Week Number System to use

Returns:
  The localized string form of the date component

getDate | ( | self, |
|  | QDate | date,
|  | int | year,
|  | int | month,
|  | int | day
| ) |  |  |

Since:
  4.5

Returns the year, month and day portion of a given date in the current calendar system

Parameters:

  | date | date to get year, month and day for
  | year | year number returned in this variable
  | month | month number returned in this variable
  | day | day of month returned in this variable

bool isLeapYear | ( | self, |
|  | int | year
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether a given date falls in a leap year.

Input date must be checked for validity in current Calendar System prior to calling, no validity checking performed in this routine, behaviour is undefined in invalid case.

Parameters:

  | date | the date to check

Returns:
  true if the date falls in a leap year, false otherwise

bool isLeapYear | ( | self, |
|  | QDate | date
| ) |  |  |

Returns whether a given date falls in a leap year.

Input date must be checked for validity in current Calendar System prior to calling, no validity checking performed in this routine, behaviour is undefined in invalid case.

Parameters:

  | date | the date to check

Returns:
  true if the date falls in a leap year, false otherwise

bool isLunar | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether the calendar is lunar based.

Returns:
  true if the calendar is lunar based, false if not

bool isLunisolar | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether the calendar is lunisolar based.

Returns:
  true if the calendar is lunisolar based, false if not

bool isProleptic | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether the calendar system is proleptic, i.e. whether dates before the epoch are supported.

See also:
  KCalendarSystem.epoch

Returns:
  true if the calendar system is proleptic, false if not

bool isSolar | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether the calendar is solar based.

Returns:
  true if the calendar is solar based, false if not

bool isValid | ( | self, |
|  | int | year,
|  | int | month,
|  | int | day
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Returns whether a given date is valid in this calendar system.

Parameters:

  | date | the date to check

Returns:
  true if the date is valid, false otherwise

bool isValid | ( | self, |
|  | QDate | date
| ) |  |  |

Returns whether a given date is valid in this calendar system.

Parameters:

  | date | the date to check

Returns:
  true if the date is valid, false otherwise

bool isValid | ( | self, |
|  | int | year,
|  | int | dayOfYear
| ) |  |  |

Returns whether a given date is valid in this calendar system.

Parameters:

  | date | the date to check

Returns:
  true if the date is valid, false otherwise

bool isValid | ( | self, |
|  | QString | eraName,
|  | int | yearInEra,
|  | int | month,
|  | int | day
| ) |  |  |

Returns whether a given date is valid in this calendar system.

Parameters:

  | date | the date to check

Returns:
  true if the date is valid, false otherwise

bool isValidIsoWeekDate | ( | self, |
|  | int | year,
|  | int | isoWeekNumber,
|  | int | dayOfIsoWeek
| ) |  |  |

Since:
  4.4

Returns whether a given date is valid in this calendar system.

Parameters:

  | year | the year portion of the date to check
  | isoWeekNumber | the ISO week portion of the date to check
  | dayOfIsoWeek | the day of week portion of the date to check

Returns:
  true if the date is valid, false otherwise

bool, int year, int month, int day julianDayToDate | ( | self, |
|  | int | jd
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Internal method to convert a Julian Day number into the YMD values for this calendar system.

All calendar system implementations MUST implement julianDayToDate and dateToJulianDay methods as all other methods can be expressed as functions of these. Does no internal validity checking.

See also:
  KCalendarSystem.dateToJulianDay

Parameters:

  | jd | Julian day number to convert to date
  | year | year number returned in this variable
  | month | month number returned in this variable
  | day | day of month returned in this variable

Returns:
  true if the date is valid, false otherwise

QDate lastDayOfMonth | ( | self, |
|  | int | year,
|  | int | month
| ) |  |  |

Since:
  4.6

Returns a QDate containing the last day of the month

Parameters:

  | date | The month to return the date for, defaults to today

Returns:
  The last day of the month

QDate lastDayOfMonth | ( | self, |
|  | QDate | date=QDate.currentDate()
| ) |  |  |

Since:
  4.6

Returns a QDate containing the last day of the month

Parameters:

  | date | The month to return the date for, defaults to today

Returns:
  The last day of the month

QDate lastDayOfYear | ( | self, |
|  | int | year
| ) |  |  |

Since:
  4.6

Returns a QDate containing the last day of the year

Parameters:

  | date | The year to return the date for, defaults to today

Returns:
  The last day of the year

QDate lastDayOfYear | ( | self, |
|  | QDate | date=QDate.currentDate()
| ) |  |  |

Since:
  4.6

Returns a QDate containing the last day of the year

Parameters:

  | date | The year to return the date for, defaults to today

Returns:
  The last day of the year

QDate latestValidDate | ( |  | self ) |

Returns the latest date valid in this calendar system implementation.

See also:
  KCalendarSystem.epoch

See also:
  KCalendarSystem.earliestValidDate

Returns:
  date the latest valid date

KLocale locale | ( |  | self ) |

Returns the locale used for translations and formats for this calendar system instance. This allows a calendar system instance to be independent of the global translations and formats if required. All implementations must refer to this locale.

Only for internal calendar system use; if public access is required then provide public methods only for those methods actually required. Any app that creates an instance with its own locale overriding global will have the original handle to the locale and can manipulate it that way if required, e.g. to change default date format. Only expose those methods that library widgets require access to internally.

See also:
  KCalendarSystem.formatDate

See also:
  KLocale.formatDate

See also:
  KCalendarSystem.weekStartDay

See also:
  KLocale.weekStartDay

See also:
  KCalendarSystem.readDate

See also:
  KLocale.readDate

Returns:
  locale to use

int month | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the month portion of a given date in the current calendar system

Parameters:

  | date | date to return month for

Returns:
  month of year, 0 if input date is invalid

QString monthName | ( | self, |
|  | int | month,
|  | int | year,
|  | KCalendarSystem.MonthNameFormat | format=KCalendarSystem.LongName
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Gets specific calendar type month name for a given date

Parameters:

  | date | date to obtain month from
  | format | specifies whether the short month name or long month name should be used

Returns:
  name of the month, empty string if any error

QString monthName | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.MonthNameFormat | format=KCalendarSystem.LongName
| ) |  |  |

Gets specific calendar type month name for a given date

Parameters:

  | date | date to obtain month from
  | format | specifies whether the short month name or long month name should be used

Returns:
  name of the month, empty string if any error

QString monthString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Converts a date into a month literal

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The month literal of the date, empty string if any error

See also:
  month()

int, int iLength monthStringToInteger | ( | self, |
|  | QString | sNum
| ) |  |  |

Deprecated:
  for internal use only

Converts a month literal of a part of a string into a integer starting at the beginning of the string

Parameters:

  | sNum | The string to parse
  | iLength | The number of QChars used, and 0 if no valid symbols was found in the string

Returns:
  An integer corresponding to the month

int monthsDifference | ( | self, |
|  | QDate | fromDate,
|  | QDate | toDate
| ) |  |  |

Returns the difference between two dates in completed calendar months The returned value will be negative if fromDate > toDate.

For example, the difference between 2010-06-10 and 2012-09-5 is 26 months. Note that the difference between two last days of the month is always 1 month, e.g. 2010-01-31 to 2010-02-28 is 1 month not 28 days.

Parameters:

  | fromDate | The date to start from
  | toDate | The date to end at

Returns:
  The number of months difference

int monthsInYear | ( | self, |
|  | QDate | date
| ) |  |  |

Since:
  4.5

Returns number of months in the given year

Parameters:

  | year | the required year

Returns:
  number of months in the year, -1 if input date invalid

int monthsInYear | ( | self, |
|  | int | year
| ) |  |  |

Since:
  4.5

Returns number of months in the given year

Parameters:

  | year | the required year

Returns:
  number of months in the year, -1 if input date invalid

QString monthsInYearString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Returns the months in year for a date as a numeric string

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The months in year literal of the date, empty string if any error

See also:
  monthsInYear()

QDate, bool ok readDate | ( | self, |
|  | QString | str
| ) |  |  |

Converts a localized date string to a QDate, using the specified format. You will usually not want to use this method.

You must supply a format and string containing at least one of the following combinations to create a valid date:

- a month and day of month
- a day of year
- a ISO week number and day of week

If a year number is not supplied then the current year will be assumed.

All date componants must be separated by a non-numeric character.

The format is not applied strictly to the input string:

- extra whitespace is ignored
- leading 0's on numbers are ignored
- capitalisation of literals is ignored

The allowed format componants are almost the same as the formatDate() function. The following date componants will be read:

- %Y the whole year (e.g. "1984" for 1984)
- %y the lower 2 digits of the year (e.g. "84" for 1984)
- %EY the full local era year (e.g. "2000 AD")
- %EC the era name short form (e.g. "AD")
- %Ey the year in era to 1 digit (e.g. 1 or 2000)
- %m the month number to two digits (January="01", December="12")
- %n the month number (January="1", December="12")
- %d the day number of the month to two digits (e.g. "01" on the first of March)
- %e the day number of the month (e.g. "1" on the first of March)
- %B the month name long form (e.g. "January")
- %b the month name short form (e.g. "Jan" for January)
- %h the month name short form (e.g. "Jan" for January)
- %A the weekday name long form (e.g. "Wednesday" for Wednesday)
- %a the weekday name short form (e.g. "Wed" for Wednesday)
- %j the day of the year number to three digits (e.g. "001" for 1 Jan)
- %V the ISO week of the year number to two digits (e.g. "01" for ISO Week 1)
- %u the day of the week number (e.g. "1" for Monday)

The following date componants are NOT supported:

- %C the 'century' portion of the year (e.g. "19" for 1984, "5" for 584, "" for 84)
- %G the year number in long form of the ISO week of the year (e.g. "2004" for 1 Jan 2005)
- %g the year number in short form of the ISO week of the year (e.g. "04" for 1 Jan 2005)
- %D the US short date format (e.g. "%m/%d/%y")
- %F the ISO short date format (e.g. "%Y-%m-%d")
- %x the KDE locale short date format
- %% the literal "%"
- %t a tab character

Parameters:

  | dateString | the string to convert
  | dateFormat | the date format to use
  | ok | if non-null, will be set to true if the date is valid, false if invalid
  | formatStandard | the standard the date format uses

Returns:
  the string converted to a QDate

See also:
  formatDate

See also:
  KLocale.readDate

QDate, bool ok readDate | ( | self, |
|  | QString | dateString,
|  | QString | dateFormat
| ) |  |  |

Converts a localized date string to a QDate, using the specified format. You will usually not want to use this method.

You must supply a format and string containing at least one of the following combinations to create a valid date:

- a month and day of month
- a day of year
- a ISO week number and day of week

If a year number is not supplied then the current year will be assumed.

All date componants must be separated by a non-numeric character.

The format is not applied strictly to the input string:

- extra whitespace is ignored
- leading 0's on numbers are ignored
- capitalisation of literals is ignored

The allowed format componants are almost the same as the formatDate() function. The following date componants will be read:

- %Y the whole year (e.g. "1984" for 1984)
- %y the lower 2 digits of the year (e.g. "84" for 1984)
- %EY the full local era year (e.g. "2000 AD")
- %EC the era name short form (e.g. "AD")
- %Ey the year in era to 1 digit (e.g. 1 or 2000)
- %m the month number to two digits (January="01", December="12")
- %n the month number (January="1", December="12")
- %d the day number of the month to two digits (e.g. "01" on the first of March)
- %e the day number of the month (e.g. "1" on the first of March)
- %B the month name long form (e.g. "January")
- %b the month name short form (e.g. "Jan" for January)
- %h the month name short form (e.g. "Jan" for January)
- %A the weekday name long form (e.g. "Wednesday" for Wednesday)
- %a the weekday name short form (e.g. "Wed" for Wednesday)
- %j the day of the year number to three digits (e.g. "001" for 1 Jan)
- %V the ISO week of the year number to two digits (e.g. "01" for ISO Week 1)
- %u the day of the week number (e.g. "1" for Monday)

The following date componants are NOT supported:

- %C the 'century' portion of the year (e.g. "19" for 1984, "5" for 584, "" for 84)
- %G the year number in long form of the ISO week of the year (e.g. "2004" for 1 Jan 2005)
- %g the year number in short form of the ISO week of the year (e.g. "04" for 1 Jan 2005)
- %D the US short date format (e.g. "%m/%d/%y")
- %F the ISO short date format (e.g. "%Y-%m-%d")
- %x the KDE locale short date format
- %% the literal "%"
- %t a tab character

Parameters:

  | dateString | the string to convert
  | dateFormat | the date format to use
  | ok | if non-null, will be set to true if the date is valid, false if invalid
  | formatStandard | the standard the date format uses

Returns:
  the string converted to a QDate

See also:
  formatDate

See also:
  KLocale.readDate

QDate, bool ok readDate | ( | self, |
|  | QString | str,
|  | KLocale.ReadDateFlags | flags
| ) |  |  |

Converts a localized date string to a QDate, using the specified format. You will usually not want to use this method.

You must supply a format and string containing at least one of the following combinations to create a valid date:

- a month and day of month
- a day of year
- a ISO week number and day of week

If a year number is not supplied then the current year will be assumed.

All date componants must be separated by a non-numeric character.

The format is not applied strictly to the input string:

- extra whitespace is ignored
- leading 0's on numbers are ignored
- capitalisation of literals is ignored

The allowed format componants are almost the same as the formatDate() function. The following date componants will be read:

- %Y the whole year (e.g. "1984" for 1984)
- %y the lower 2 digits of the year (e.g. "84" for 1984)
- %EY the full local era year (e.g. "2000 AD")
- %EC the era name short form (e.g. "AD")
- %Ey the year in era to 1 digit (e.g. 1 or 2000)
- %m the month number to two digits (January="01", December="12")
- %n the month number (January="1", December="12")
- %d the day number of the month to two digits (e.g. "01" on the first of March)
- %e the day number of the month (e.g. "1" on the first of March)
- %B the month name long form (e.g. "January")
- %b the month name short form (e.g. "Jan" for January)
- %h the month name short form (e.g. "Jan" for January)
- %A the weekday name long form (e.g. "Wednesday" for Wednesday)
- %a the weekday name short form (e.g. "Wed" for Wednesday)
- %j the day of the year number to three digits (e.g. "001" for 1 Jan)
- %V the ISO week of the year number to two digits (e.g. "01" for ISO Week 1)
- %u the day of the week number (e.g. "1" for Monday)

The following date componants are NOT supported:

- %C the 'century' portion of the year (e.g. "19" for 1984, "5" for 584, "" for 84)
- %G the year number in long form of the ISO week of the year (e.g. "2004" for 1 Jan 2005)
- %g the year number in short form of the ISO week of the year (e.g. "04" for 1 Jan 2005)
- %D the US short date format (e.g. "%m/%d/%y")
- %F the ISO short date format (e.g. "%Y-%m-%d")
- %x the KDE locale short date format
- %% the literal "%"
- %t a tab character

Parameters:

  | dateString | the string to convert
  | dateFormat | the date format to use
  | ok | if non-null, will be set to true if the date is valid, false if invalid
  | formatStandard | the standard the date format uses

Returns:
  the string converted to a QDate

See also:
  formatDate

See also:
  KLocale.readDate

QDate readDate | ( | self, |
|  | QString | dateString,
|  | QString | dateFormat,
|  | bool | ok,
|  | KLocale.DateTimeFormatStandard | formatStandard
| ) |  |  |

Converts a localized date string to a QDate, using the specified format. You will usually not want to use this method.

You must supply a format and string containing at least one of the following combinations to create a valid date:

- a month and day of month
- a day of year
- a ISO week number and day of week

If a year number is not supplied then the current year will be assumed.

All date componants must be separated by a non-numeric character.

The format is not applied strictly to the input string:

- extra whitespace is ignored
- leading 0's on numbers are ignored
- capitalisation of literals is ignored

The allowed format componants are almost the same as the formatDate() function. The following date componants will be read:

- %Y the whole year (e.g. "1984" for 1984)
- %y the lower 2 digits of the year (e.g. "84" for 1984)
- %EY the full local era year (e.g. "2000 AD")
- %EC the era name short form (e.g. "AD")
- %Ey the year in era to 1 digit (e.g. 1 or 2000)
- %m the month number to two digits (January="01", December="12")
- %n the month number (January="1", December="12")
- %d the day number of the month to two digits (e.g. "01" on the first of March)
- %e the day number of the month (e.g. "1" on the first of March)
- %B the month name long form (e.g. "January")
- %b the month name short form (e.g. "Jan" for January)
- %h the month name short form (e.g. "Jan" for January)
- %A the weekday name long form (e.g. "Wednesday" for Wednesday)
- %a the weekday name short form (e.g. "Wed" for Wednesday)
- %j the day of the year number to three digits (e.g. "001" for 1 Jan)
- %V the ISO week of the year number to two digits (e.g. "01" for ISO Week 1)
- %u the day of the week number (e.g. "1" for Monday)

The following date componants are NOT supported:

- %C the 'century' portion of the year (e.g. "19" for 1984, "5" for 584, "" for 84)
- %G the year number in long form of the ISO week of the year (e.g. "2004" for 1 Jan 2005)
- %g the year number in short form of the ISO week of the year (e.g. "04" for 1 Jan 2005)
- %D the US short date format (e.g. "%m/%d/%y")
- %F the ISO short date format (e.g. "%Y-%m-%d")
- %x the KDE locale short date format
- %% the literal "%"
- %t a tab character

Parameters:

  | dateString | the string to convert
  | dateFormat | the date format to use
  | ok | if non-null, will be set to true if the date is valid, false if invalid
  | formatStandard | the standard the date format uses

Returns:
  the string converted to a QDate

See also:
  formatDate

See also:
  KLocale.readDate

bool setDate | ( | self, |
|  | QDate | date,
|  | int | year,
|  | int | month,
|  | int | day
| ) |  |  |

Since:
  4.5

Set a date using the era, year in era number, month and day

Parameters:

  | date | date to change
  | eraName | Era string
  | yearInEra | Year In Era number
  | month | Month number
  | day | Day Of Month number

Returns:
  true if the date is valid, false otherwise

bool setDate | ( | self, |
|  | QDate | date,
|  | int | year,
|  | int | dayOfYear
| ) |  |  |

Since:
  4.5

Set a date using the era, year in era number, month and day

Parameters:

  | date | date to change
  | eraName | Era string
  | yearInEra | Year In Era number
  | month | Month number
  | day | Day Of Month number

Returns:
  true if the date is valid, false otherwise

bool setDate | ( | self, |
|  | QDate | date,
|  | QString | eraName,
|  | int | yearInEra,
|  | int | month,
|  | int | day
| ) |  |  |

Since:
  4.5

Set a date using the era, year in era number, month and day

Parameters:

  | date | date to change
  | eraName | Era string
  | yearInEra | Year In Era number
  | month | Month number
  | day | Day Of Month number

Returns:
  true if the date is valid, false otherwise

bool setDateIsoWeek | ( | self, |
|  | QDate | date,
|  | int | year,
|  | int | isoWeekNumber,
|  | int | dayOfIsoWeek
| ) |  |  |

Since:
  4.4

Set a date using the year number, ISO week number and day of week number.

Parameters:

  | date | date to change
  | year | year
  | isoWeekNumber | ISO week of year
  | dayOfIsoWeek | day of week Mon..Sun (1..7)

Returns:
  true if the date is valid, false otherwise

setHasYear0 | ( | self, |
|  | bool | hasYear0
| ) |  |  |

Deprecated:
  for internal use only

Since:
  4.4

Sets if Calendar System has Year 0 or not

Only for internal calendar system use

setMaxDaysInWeek | ( | self, |
|  | int | maxDays
| ) |  |  |

Deprecated:
  for internal use only

Sets the maximum number of days in a week

Only for internal calendar system use

setMaxMonthsInYear | ( | self, |
|  | int | maxMonths
| ) |  |  |

Deprecated:
  for internal use only

Sets the maximum number of months in a year

Only for internal calendar system use

bool setYMD | ( | self, |
|  | QDate | date,
|  | int | y,
|  | int | m,
|  | int | d
| ) |  |  |

Deprecated:
  Use setDate() instead

Some implementations reject year range 00 to 99, but extended date ranges now require these to be accepted. Equivalent in QDate is obsoleted.

Changes the date's year, month and day. The range of the year, month and day depends on which calendar is being used.

Parameters:

  | date | Date to change
  | y | Year
  | m | Month number
  | d | Day of month

Returns:
  true if the date is valid; otherwise returns false.

int shortYearWindowStartYear | ( |  | self ) |

Since:
  4.6

Returns the Short Year Window Start Year for the current Calendar System.

Use this function to get the Start Year for the Short Year Window to be applied when 2 digit years are entered for a Short Year input format, e.g. if the Short Year Window Start Year is 1930, then the input Short Year value of 40 is interpreted as 1940 and the input Short Year value of 10 is interpreted as 2010.

The Short Year Window is only ever applied when reading the Short Year format and not the Long Year format, i.e. KLocale.ShortFormat or '%y' only and not KLocale.LongFormat or '%Y'.

The Start Year 0 effectively means not to use a Short Year Window

Each Calendar System requires a different Short Year Window as they have different epochs. The Gregorian Short Year Window usually pivots around the year 2000, whereas the Hebrew Short Year Window usually pivots around the year 5000.

This value must always be used when evaluating user input Short Year strings.

See also:
  KLocale.shortYearWindowStartYear

See also:
  KLocale.applyShortYearWindow

Returns:
  the short year window start year

int week | ( | self, |
|  | QDate | date,
|  | int | yearNum=0
| ) |  |  |

Returns the Week Number for the date in the required Week Number System.

Unless you want a specific Week Number System (e.g. ISO Week), you should use the localized Week Number form of week().

If the date falls in the last week of the previous year or the first week of the following year, then the yearNum returned will be set to the appropriate year.

Technically, the ISO Week Number only applies to the ISO/Gregorian Calendar System, but the same rules will be applied to the current Calendar System.

See also:
  weeksInYear()

See also:
  formatDate()

Parameters:

  | date | the date to obtain week from
  | weekNumberSystem | the Week Number System to use
  | yearNum | returns the year the date belongs to

Returns:
  week number, -1 if input date invalid

int week | ( | self, |
|  | QDate | date,
|  | KLocale.WeekNumberSystem | weekNumberSystem,
|  | int | yearNum=0
| ) |  |  |

Returns the Week Number for the date in the required Week Number System.

Unless you want a specific Week Number System (e.g. ISO Week), you should use the localized Week Number form of week().

If the date falls in the last week of the previous year or the first week of the following year, then the yearNum returned will be set to the appropriate year.

Technically, the ISO Week Number only applies to the ISO/Gregorian Calendar System, but the same rules will be applied to the current Calendar System.

See also:
  weeksInYear()

See also:
  formatDate()

Parameters:

  | date | the date to obtain week from
  | weekNumberSystem | the Week Number System to use
  | yearNum | returns the year the date belongs to

Returns:
  week number, -1 if input date invalid

QString weekDayName | ( | self, |
|  | int | weekDay,
|  | KCalendarSystem.WeekDayNameFormat | format=KCalendarSystem.LongDayName
| ) |  |  |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Gets specific calendar type week day name.

Parameters:

  | date | the date
  | format | specifies whether the short month name or long month name should be used

Returns:
  day name, empty string if any error

QString weekDayName | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.WeekDayNameFormat | format=KCalendarSystem.LongDayName
| ) |  |  |

Gets specific calendar type week day name.

Parameters:

  | date | the date
  | format | specifies whether the short month name or long month name should be used

Returns:
  day name, empty string if any error

int weekDayOfPray | ( |  | self ) |

Abstract method:
  This method is abstract and can be overridden but not called directly.

Deprecated:
  use KLocale.weekDayOfPray() instead

Returns the day of the week traditionally associated with religious observance for this calendar system. Note this may not be accurate for the users locale, e.g. Gregorian calendar used in non-Christian countries, in use cases where this could be an issue it is recommended to use KLocale.weekDayOfPray() instead.

Returns:
  day number (None = 0, Monday = 1, ..., Sunday = 7)

int, int yearNum weekNumber | ( | self, |
|  | QDate | date,
|  | int | yearNum=0
| ) |  |  |

Deprecated:
  use week() instead

Returns the ISO week number for the given date.

ISO 8601 defines the first week of the year as the week containing the first Thursday. See http://en.wikipedia.org/wiki/ISO_8601 and http://en.wikipedia.org/wiki/ISO_week_date

If the date falls in the last week of the previous year or the first week of the following year, then the yearNum returned will be set to the appropriate year.

Parameters:

  | date | the date to obtain week from
  | yearNum | returns the year the date belongs to

Returns:
  ISO week number, -1 if input date invalid

QString weekNumberString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Converts a date into a week number literal

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The day literal of the date, empty string if any error

See also:
  weekNumber()

int weekStartDay | ( |  | self ) |

Use this to determine which day is the first day of the week.

Uses the calendar system's internal locale set when the instance was created, which ensures that the correct calendar system and locale settings are respected, which would not occur in some cases if using the global locale. Defaults to global locale.

See also:
  KLocale.weekStartDay

Returns:
  an integer (Monday = 1, ..., Sunday = 7)

int weeksInYear | ( | self, |
|  | QDate | date
| ) |  |  |

Since:
  4.7

Returns the number of Weeks in a year using the required Week Number System.

Unless you specifically want a particular Week Number System (e.g. ISO Weeks) you should use the localized number of weeks provided by weeksInYear().

See also:
  week()

See also:
  formatDate()

Parameters:

  | year | the year
  | weekNumberSystem | the week number system to use

Returns:
  number of weeks in the year, -1 if date invalid

int weeksInYear | ( | self, |
|  | int | year
| ) |  |  |

Since:
  4.7

Returns the number of Weeks in a year using the required Week Number System.

Unless you specifically want a particular Week Number System (e.g. ISO Weeks) you should use the localized number of weeks provided by weeksInYear().

See also:
  week()

See also:
  formatDate()

Parameters:

  | year | the year
  | weekNumberSystem | the week number system to use

Returns:
  number of weeks in the year, -1 if date invalid

int weeksInYear | ( | self, |
|  | int | year,
|  | KLocale.WeekNumberSystem | weekNumberSystem
| ) |  |  |

Since:
  4.7

Returns the number of Weeks in a year using the required Week Number System.

Unless you specifically want a particular Week Number System (e.g. ISO Weeks) you should use the localized number of weeks provided by weeksInYear().

See also:
  week()

See also:
  formatDate()

Parameters:

  | year | the year
  | weekNumberSystem | the week number system to use

Returns:
  number of weeks in the year, -1 if date invalid

QString weeksInYearString | ( | self, |
|  | QDate | pDate,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.4

Returns the weeks in year for a date as a numeric string

Parameters:

  | pDate | The date to convert
  | format | The format to return, either short or long

Returns:
  The weeks in year literal of the date, empty string if any error

See also:
  weeksInYear()

int year | ( | self, |
|  | QDate | date
| ) |  |  |

Returns the year portion of a given date in the current calendar system

Parameters:

  | date | date to return year for

Returns:
  year, 0 if input date is invalid

int yearInEra | ( | self, |
|  | QDate | date
| ) |  |  |

Since:
  4.5

Returns the Year In Era portion of a given date in the current calendar system, for example 1 for "1 BC".

Parameters:

  | date | date to return Year In Era for

Returns:
  Year In Era, -1 if input date is invalid

QString yearInEraString | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.ShortFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Since:
  4.5

Converts a date into a Year In Era literal

Parameters:

  | date | date to return Year In Era for
  | format | format to return, either short or long

Returns:
  Year In Era literal of the date, empty string if any error

QString yearString | ( | self, |
|  | QDate | date,
|  | KCalendarSystem.StringFormat | format=KCalendarSystem.LongFormat
| ) |  |  |

Deprecated:
  use formatDate(QDate, KLocale.DateTimeComponent, KLocale.DateTimeComponentFormat)

Converts a date into a year literal

Parameters:

  | date | date to convert
  | format | format to return, either short or long

Returns:
  year literal of the date, empty string if any error

See also:
  year()

int, int iLength yearStringToInteger | ( | self, |
|  | QString | sNum
| ) |  |  |

Deprecated:
  for internal use only

Converts a year literal of a part of a string into a integer starting at the beginning of the string

Parameters:

  | sNum | The string to parse
  | iLength | The number of QChars used, and 0 if no valid symbols was found in the string

Returns:
  An integer corresponding to the year

int yearsDifference | ( | self, |
|  | QDate | fromDate,
|  | QDate | toDate
| ) |  |  |

Returns the difference between two dates in completed calendar years. The returned value will be negative if fromDate > toDate.

For example, the difference between 2010-06-10 and 2012-09-5 is 2 years.

Parameters:

  | fromDate | The date to start from
  | toDate | The date to end at

Returns:
  The number of years difference

## Static Method Documentation

QString calendarLabel | ( | QString | calendarType
| ) |  |  |

Since:
  4.6

Returns a localized label to display for the current Calendar System type.

Returns:
  localized label for this Calendar System

QString calendarLabel | ( | KLocale.CalendarSystem | calendarSystem,
|  | KLocale | locale=KGlobal.locale()
| ) |  |  |

Since:
  4.6

Returns a localized label to display for the current Calendar System type.

Returns:
  localized label for this Calendar System

KLocale.CalendarSystem calendarSystem | ( | QString | calendarType
| ) |  |  |

Since:
  4.6

Returns the Calendar System type of the KCalendarSystem object

Returns:
  type of calendar system

KLocale.CalendarSystem calendarSystemForCalendarType | ( | QString | calendarType
| ) |  |  |

Deprecated:
  use calendarSystem(const QString &calendarType) instead

Since:
  4.6

Returns the Calendar System enum value for a given Calendar Type, e.g. KLocale.QDateCalendar for "gregorian"

Parameters:

  | calendarType | the calendar type to convert

Returns:
  calendar system for calendar type

QStringList calendarSystems | ( |  | ) |

Deprecated:
  use calendarSystemsList() instead

Gets a list of names of supported calendar systems.

Returns:
  list of names

[KLocale.CalendarSystem] calendarSystemsList | ( |  | ) |

Since:
  4.6

Returns the list of currently supported Calendar Systems

Returns:
  list of Calendar Systems

QString calendarType | ( | KLocale.CalendarSystem | calendarSystem
| ) |  |  |

Deprecated:
  use calendarSystem() instead

Returns the calendar system type.

Returns:
  type of calendar system

KCalendarSystem create | ( | QString | calType=QLatin1String("gregorian"),
|  | KLocale | locale=0
| ) |  |  |

Since:
  4.6

Creates a KCalendarSystem object for the required Calendar System

Parameters:

  | calendarSystem | the Calendar System to create
  | config | a configuration file with a 'KCalendarSystem %calendarType' group detailing locale-related preferences (such as era options). The global config is used if null.
  | locale | locale to use for translations. The global locale is used if null.

Returns:
  a KCalendarSystem object

KCalendarSystem create | ( | QString | calType,
|  | KSharedPtr | config,
|  | KLocale | locale=0
| ) |  |  |

Since:
  4.6

Creates a KCalendarSystem object for the required Calendar System

Parameters:

  | calendarSystem | the Calendar System to create
  | config | a configuration file with a 'KCalendarSystem %calendarType' group detailing locale-related preferences (such as era options). The global config is used if null.
  | locale | locale to use for translations. The global locale is used if null.

Returns:
  a KCalendarSystem object

KCalendarSystem create | ( | KLocale.CalendarSystem | calendarSystem,
|  | KLocale | locale=0
| ) |  |  |

Since:
  4.6

Creates a KCalendarSystem object for the required Calendar System

Parameters:

  | calendarSystem | the Calendar System to create
  | config | a configuration file with a 'KCalendarSystem %calendarType' group detailing locale-related preferences (such as era options). The global config is used if null.
  | locale | locale to use for translations. The global locale is used if null.

Returns:
  a KCalendarSystem object

KCalendarSystem create | ( | KLocale.CalendarSystem | calendarSystem,
|  | KSharedPtr | config,
|  | KLocale | locale=0
| ) |  |  |

Since:
  4.6

Creates a KCalendarSystem object for the required Calendar System

Parameters:

  | calendarSystem | the Calendar System to create
  | config | a configuration file with a 'KCalendarSystem %calendarType' group detailing locale-related preferences (such as era options). The global config is used if null.
  | locale | locale to use for translations. The global locale is used if null.

Returns:
  a KCalendarSystem object

## Enumeration Documentation

MonthNameFormat

Format for returned month / day name.

Enumerator:

  ShortName |
  LongName |
  ShortNamePossessive |
  LongNamePossessive |
  NarrowName |

StringFormat

Format for returned year number / month number / day number as string.

Enumerator:

  ShortFormat |
  LongFormat |

WeekDayNameFormat

Format for returned month / day name.

Enumerator:

  ShortDayName |
  LongDayName |
  NarrowDayName |