1. Function Description PHP
cal_days_in_month() Returns the 4
number of days
in a month for a
specified year
and calendar
cal_from_jd() Converts a Julian 4
day count into a
date of a
specified
calendar
cal_info() Returns 4
information
about a given
calendar
cal_to_jd() Converts a date 4
to Julian day
count
easter_date() Returns the Unix 3
timestamp for
midnight on
Easter of a
specified year
easter_days() Returns the 3
number of days
after March 21,
on which Easter
falls for a
specified year
FrenchToJD() Converts a 3
French
Republican date
to a Julian day
count
GregorianToJD() Converts a 3
Gregorian date
to a Julian day
count
JDDayOfWeek() Returns the day 3
of a week
JDMonthName() Returns a month 3
name
JDToFrench() Converts a Julian 3
day count to a
French
Republican date
JDToGregorian() Converts a Julian 3
day count to a
Gregorian date
jdtojewish() Converts a Julian 3
day count to a
Jewish date
JDToJulian() Converts a Julian 3
day count to a
Julian date

2. jdtounix() Converts a Julian 4
day count to a
Unix timestamp
JewishToJD() Converts a 3
Jewish date to a
Julian day count
JulianToJD() Converts a Julian 3
date to a Julian
day count
unixtojd() Converts a Unix 4
timestamp to a
Julian day count