Copyright	Alexander Ignatyev 2016
Safe Haskell	Safe
Language	Haskell2010

Data.Astro.Time.GregorianCalendar

Description

Gregorian Calendar was introduced by Pope Gregory XIII. He abolished the days 1582-10-05 to 1582-10-14 inclusive to bring back civil and tropical years back to line.

Synopsis

isLeapYear :: Integer -> Bool
dayNumber :: Day -> Int
easterDayInYear :: Int -> Day
gregorianDateAdjustment :: Integer -> Int -> Int -> Int

Documentation

isLeapYear :: Integer -> Bool Source #

Check Gregorian calendar leap year

dayNumber :: Day -> Int Source #

Day Number in a year

easterDayInYear :: Int -> Day Source #

Get Easter date function uses absolutely crazy Butcher's algorithm

gregorianDateAdjustment :: Integer -> Int -> Int -> Int Source #