Predefined Constants
cal_days_in_month
Calendar
PHP Manual

# Calendar Functions

## Table of Contents

- cal_days_in_month — Return the number of days in a month for a given year and calendar
- cal_from_jd — Converts from Julian Day Count to a supported calendar
- cal_info — Returns information about a particular calendar
- cal_to_jd — Converts from a supported calendar to Julian Day Count
- easter_date — Get Unix timestamp for midnight on Easter of a given year
- easter_days — Get number of days after March 21 on which Easter falls for a given year
- frenchtojd — Converts a date from the French Republican Calendar to a Julian Day Count
- gregoriantojd — Converts a Gregorian date to Julian Day Count
- jddayofweek — Returns the day of the week
- jdmonthname — Returns a month name
- jdtofrench — Converts a Julian Day Count to the French Republican Calendar
- jdtogregorian — Converts Julian Day Count to Gregorian date
- jdtojewish — Converts a Julian day count to a Jewish calendar date
- jdtojulian — Converts a Julian Day Count to a Julian Calendar Date
- jdtounix — Convert Julian Day to Unix timestamp
- jewishtojd — Converts a date in the Jewish Calendar to Julian Day Count
- juliantojd — Converts a Julian Calendar date to Julian Day Count
- unixtojd — Convert Unix timestamp to Julian Day

Predefined Constants
cal_days_in_month
Calendar
PHP Manual