Maundy Thursday Maundy Thursday Maundy Thursday (also known as Holy Thursday, Covenant Thursday, Great and Holy Thursday, Sheer Thursday, and Thursday of Mysteries, among other names) is the Christian holy day falling on the Thursday before Easter. It commemorates the foot washing (Maundy) and Last Supper of Jesus Christ with the Apostles, as described in the canonical gospels. It is the fifth day of Holy Week, preceded by Holy Wednesday and followed by Good Friday. "Maun-" is from Old Norse, present of munu meaning shall or will; akin to Old English gemynd meaning mind. The date is always between March 19 and
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