It returns the day of the week

Example

<?php
echo jddayofweek (cal_to_jd(CAL_GREGORIAN, date(“m”),date(“d”), date(“Y”)) , 1 );
?>

Output

Friday

It converts a Gregorian date to Julian Day Count

Example

<?php
echo gregoriantojd (2 , 2 , 14 )
?>

Output

1726206

It converts a date from the French Republican Calendar to a Julian Day Count

Example

<?php
echo frenchtojd(4,4,12);
?>

Output

2379951

It returns the number of days between March 21 and Easter day of a given year.

Example

<?php
echo easter_days(1984);
?>

Output

32

It returns the unix timestamp of easter date for a given year

Example

<?php
echo date(“M-d-Y”, easter_date(1984));
?>

Output

Apr-22-1984

It converts from a supported calendar to Julian Day Count.

Example

<?php
echo cal_to_jd(CAL_GREGORIAN,05,17,1984);
?>

Output

2445838

It returns information about a particular calendar

Example

<?php
echo “<pre>”;
$calInfo = cal_info(CAL_GREGORIAN);
print_r($calInfo);
?>

Output

Array
(
[months] => Array
(
[1] => January
[2] => February
[3] => March
[4] => April
[5] => May
[6] => June
[7] => July
[8] => August
[9] => September
[10] => October
[11] => November
[12] => December
)

[abbrevmonths] => Array
(
[1] => Jan
[2] => Feb
[3] => Mar
[4] => Apr
[5] => May
[6] => Jun
[7] => Jul
[8] => Aug
[9] => Sep
[10] => Oct
[11] => Nov
[12] => Dec
)

[maxdaysinmonth] => 31
[calname] => Gregorian
[calsymbol] => CAL_GREGORIAN
)

It converts from Julian Day Count to a supported calendar

Example

<?php
echo “<pre>”;
$day = unixtojd(mktime(0, 0, 0, 5, 17, 1984));
print_r(cal_from_jd($day, CAL_GREGORIAN));
?>

Output

Array
(
[date] => 5/17/1984
[month] => 5
[day] => 17
[year] => 1984
[dow] => 4
[abbrevdayname] => Thu
[dayname] => Thursday
[abbrevmonth] => May
[monthname] => May
)

It returns the number of days in a month for a given year and calendar

Example

<?php
$number = cal_days_in_month(CAL_GREGORIAN, 2, 1984);
echo  $number.” days”;
?>

Output

29 days