Calculate the Ester date from year using the method developed from Gauss.
method takes a single argument and is specialized on integer or an istance of a
timestamp class from the
local-date library. When called, the methods performs the algorithm invented by
to calculate the Easter date and returns two values: the day (starting
1) and the month (
4) of the Easter.
Examples given below:
(easter-date:easter-date (local-time:now)) ; the date for the Easter in the current year (easter-date:easter-date 2022) ; the date for the Easter for the year 2022 (values 17 4)
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