This library makes it easy to compute the date of Easter for any given year.
There are three different algorithms for computing the Easter
date. The Western algorithm is the most widely used nowadays.
Compute the Easter date for the given method and year
easter Western 2017 -- 2017-04-16
easter Orthodox 1416 -- 1416-04-29
A date consists of year, month and day. The
Monthtype inelm/timeis used for the month.