Reference documentation for Expressif functions in the temporal/calendar scope.

Name Overview
catholic-calendar Returns the date of the Catholic calendar event passed as parameter for the year specified by the argument. Returns null if the event is unknown.
first-in-month Returns a new date value corresponding to the first occurrence of the weekday passed as a parameter of the month of the date passed as the argument.
first-of-month Returns the first day of the month of the same month/year than the argument dateTime.
first-of-year Returns the first of January of the same year than the argument dateTime.
last-in-month Returns a new dateTime value corresponding to the last occurrence of the weekday passed as a parameter of the month of the date passed as the argument.
last-of-month Returns the last day of the month of the same month/year than the argument dateTime.
last-of-year Returns the 31st of December of the same year than the argument dateTime.
length-of-month returns the count of days within the month of the dateTime value passed as the argument. If the argument is not a dateTime but a text at format “YYYY-MM”, it returns count of days of the month represented by this value. It returns a value between 28 and 31 (depending of leap year and month).
length-of-year Returns the count of days within the year of the dateTime value passed as the argument. If the argument is not a dateTime but an integer, returns count of days of the corresponding year. It returns 365 or 366 (for leap years).

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