Create a Carbon instance from the easter date of a year

[andreisena]

Get the easter date based on the Computus calculation. See https://en.wikipedia.org/wiki/Computus

[kylekatarnls]

Nice! But it seems to me a bit too specific to be part of the core library. But I hope to put some day a list of custom macros, helpers and other Carbon extensions in our documentation, and this one could be relevant in this list.

[kylekatarnls]

Will appear in the documentation:
gh-pages...kylekatarnls:gh-pages-1.26

[Miguel-Serejo]

PHP offers an easter_days() function that returns the number of days from March 21st to Easter. This can easily be used with carbon to get a year's easter date:

public static function easterSunday($year){
	//returns easter date as number of days since march 21st
	//http://php.net/manual/en/function.easter-days.php
	//easter_date is an alternative but has issues with timezones and is limited to UNIX timestamp dates
	$easter = easter_days($year);
	$march21 = Carbon::createFromDate($year, 3, 21);
	return $march21->addDays($easter);
}

[kylekatarnls]

If it fails on year>2038, I prefer to keep the current version, if not, we can update it.

[Miguel-Serejo]

easter_date() fails for year >2038. easter_days does not.
From the php docs:

This function can be used instead of easter_date() to calculate Easter for years which fall outside the range of Unix timestamps (i.e. before 1970 or after 2037).

[kylekatarnls]

Thanks, changed.