Easter in Latvia Easter in Latvia The Christian festival of Easter is celebrated in Latvia as Lieldienas (). Lieldienas enters Holy Week with Palm Sunday, Maundy Thursday, Good Friday and Holy Saturday, but Sunday will mark first Lieldienas. Second Lieldienas is on Monday of the following week. Each day has a special significance. Also, many pagan elements of celebrating Lieldienas have become a tradition. Nowadays, the common date of Lieldienas is the first Sunday after the first full moon, after or during the vernal equinox. Thus, the Western Christian Church Lieldienas falls on a date between 22 March and 25 April. In Eastern
Determination of the day of the week the intended design objective. The tabular forerunner to Tøndering's algorithm is embodied in the following K&R C function. With minor changes, it was adapted for other high level programming languages such as APL2. Posted by Tomohiko Sakamoto on the comp.lang.c Usenet newsgroup in 1992, it is accurate for any Gregorian date. IBM's Rata Die method requires that one knows the "key day" of the proleptic Gregorian calendar i.e. the day of the week of January 1, AD 1 (its first date). This has to be done to establish the remainder number based on which the day of the week is