View Source Cldr.Calendar.Japanese (ex_cldr_calendars_japanese v1.0.1)

Implements the Japanese calendar that is calendrically the same as the proleptic Gregorian calendar but has a different era structure.

Summary

Functions

Identifies that this calendar is month based.

Returns the calendar year as displayed on rendered calendars.

Defines the CLDR calendar type for this calendar.

Returns the cyclic year as displayed on rendered calendars.

Calculates the day and era from the given year, month, and day.

Calculates the day of the year from the given year, month, and day.

Returns how many days there are in the given month.

Returns how many days there are in the given year and month.

Returns the number days in a a week.

Returns the number days in a given year.

Returns the extended year as displayed on rendered calendars.

Calculates the ISO week of the year from the given year, month, and day.

Returns a Date.Range.t representing a given month of a year.

Returns the month of the year from the given year, month, and day.

Returns the number of months in a leap year.

Returns the number of months in a normal year.

Returns the number of months in a given year.

Converts the t:Calendar.iso_days format to the datetime format specified by this calendar.

Returns the t:Calendar.iso_days format of the specified date.

Returns the number of periods in a given year. A period corresponds to a month in month-based calendars and a week in week-based calendars.

Adds an increment number of date_parts to a year-month-day.

Returns a Date.Range.t representing a given quarter of a year.

Returns the quarter of the year from the given year, month, and day.

Returns the related gregorain year as displayed on rendered calendars.

Determines if the date given is valid according to this calendar.

Returns a Date.Range.t representing a given week of a year.

Calculates the week of the year from the given year, month, and day.

Calculates the week of the year from the given year, month, and day.

Returns the number of weeks in a given year.

Returns a Date.Range.t representing a given year.

Calculates the year and era from the given year.

Calculates the year and era from the given date.

Functions

Identifies that this calendar is month based.

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calendar_year(year, month, day)

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@spec calendar_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  Calendar.year()

Returns the calendar year as displayed on rendered calendars.

Defines the CLDR calendar type for this calendar.

This type is used in support of Cldr.Calendar. localize/3.

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cyclic_year(year, month, day)

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@spec cyclic_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  Calendar.year()

Returns the cyclic year as displayed on rendered calendars.

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date_from_iso_days(iso_days)

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See Cldr.Calendar.Gregorian.date_from_iso_days/1.

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date_to_iso_days(year, month, day)

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See Cldr.Calendar.Gregorian.date_to_iso_days/3.

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day_of_era(year, month, day)

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@spec day_of_era(Calendar.year(), Calendar.month(), Calendar.day()) ::
  {day :: Calendar.day(), era :: Calendar.era()}

Calculates the day and era from the given year, month, and day.

By default we consider on two eras: before the epoch and on-or-after the epoch.

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day_of_year(year, month, day)

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@spec day_of_year(Calendar.year(), Calendar.month(), Calendar.day()) :: Calendar.day()

Calculates the day of the year from the given year, month, and day.

@spec days_in_month(Calendar.month()) ::
  Calendar.month()
  | {:ambiguous, Range.t() | [pos_integer()]}
  | {:error, :undefined}

Returns how many days there are in the given month.

Must be implemented in derived calendars because we cannot know what the calendar format is.

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days_in_month(year, month)

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@spec days_in_month(Calendar.year(), Calendar.month()) :: Calendar.month()

Returns how many days there are in the given year and month.

Returns the number days in a a week.

Returns the number days in a given year.

The year is the number of years since the epoch.

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extended_year(year, month, day)

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@spec extended_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  Calendar.year()

Returns the extended year as displayed on rendered calendars.

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iso_week_of_year(year, month, day)

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@spec iso_week_of_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  {:error, :not_defined}

Calculates the ISO week of the year from the given year, month, and day.

By default this function always returns {:error, :not_defined}.

Returns a Date.Range.t representing a given month of a year.

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month_of_year(year, month, day)

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Returns the month of the year from the given year, month, and day.

Returns the number of months in a leap year.

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months_in_ordinary_year()

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Returns the number of months in a normal year.

Returns the number of months in a given year.

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naive_datetime_from_iso_days(arg)

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Converts the t:Calendar.iso_days format to the datetime format specified by this calendar.

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naive_datetime_to_iso_days(year, month, day, hour, minute, second, microsecond)

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Returns the t:Calendar.iso_days format of the specified date.

Returns the number of periods in a given year. A period corresponds to a month in month-based calendars and a week in week-based calendars.

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plus(year, month, day, date_part, increment, options \\ [])

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Adds an increment number of date_parts to a year-month-day.

date_part can be :months only.

Returns a Date.Range.t representing a given quarter of a year.

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quarter_of_year(year, month, day)

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@spec quarter_of_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  Cldr.Calendar.quarter()

Returns the quarter of the year from the given year, month, and day.

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valid_date?(year, month, day)

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Determines if the date given is valid according to this calendar.

Returns a Date.Range.t representing a given week of a year.

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week_of_month(year, month, day)

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@spec week_of_month(Calendar.year(), Calendar.month(), Calendar.day()) ::
  {pos_integer(), pos_integer()} | {:error, :not_defined}

Calculates the week of the year from the given year, month, and day.

By default this function always returns {:error, :not_defined}.

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week_of_year(year, month, day)

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@spec week_of_year(Calendar.year(), Calendar.month(), Calendar.day()) ::
  {:error, :not_defined}

Calculates the week of the year from the given year, month, and day.

By default this function always returns {:error, :not_defined}.

Returns the number of weeks in a given year.

Returns a Date.Range.t representing a given year.

@spec year_of_era(Calendar.year()) :: {year :: Calendar.year(), era :: Calendar.era()}

Calculates the year and era from the given year.

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year_of_era(year, month, day)

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@spec year_of_era(Calendar.year(), Calendar.month(), Calendar.day()) ::
  {year :: Calendar.year(), era :: Calendar.era()}

Calculates the year and era from the given date.