Calculators

When is Eastern

Type:	code fragment
Added by:	steinol
Entered:	09/01/2004
Last modified:	01/12/2003
Rating:	- (fewer than 3 votes)
Views:	4367

simple function to calculate eastersunday. input is the year you wish calculate. output is the day of eastersunday and the eastermonth.

<?
 function eastern($year){

                              $m = ((($year-$year%100)/100)-(($year-$year%400)/400)-(($year-$year%300)/300)+15)%30;

                              $n = ((($year-$year%100)/100)-(($year-$year%400)/400)+4)%7;

                              $a = $year%19;

                              $b = $year%4;

                              $c = $year%7;

                              $d = (19*$a+$m)%30;

                              $e = (2*$b+4*$c+6*$d+$n)%7;

                              $eastersunday = 22+$d+$e;

                              $eastermonth = 3;

                              if ($eastersunday > 31){

                                $eastersunday -= 31;

                                $eastermonth = 4;

                              }

                              return substr(eastersunday, eastermonth);

                            }
 ?>

Usage Example

Rate This Script

Zend - The PHP Company

Calculators

Search