Maundy Thursday April 22 inclusive, but these dates fall on different days depending on whether the Gregorian calendar or Julian calendar is used liturgically. Eastern churches generally use the Julian calendar and celebrate this feast throughout the 21st century between April 1 and May 5 in the more commonly used Gregorian calendar. The liturgy held on the evening of Maundy Thursday initiates the Easter Triduum, the period which commemorates the passion, death, and resurrection of Jesus; this period includes Good Friday and Holy Saturday, and ends on the evening of Easter. The Mass of the Lord's Supper or service of worship is
Thursday day of liturgical celebration", that comes from the Latin "feria quinta" used in religious texts where it was not allowed to consecrate days to pagan gods. Icelandic also uses the term "fifth day" ("Fimmtudagur"). Quakers traditionally referred to Thursday as "Fifth Day" eschewing the pagan origin of the English name "Thursday". In the Christian tradition, Maundy Thursday or Holy Thursday is the Thursday before Easter — the day on which the Last Supper occurred. Also known as "Sheer Thursday" in the United Kingdom, it is traditionally a day of cleaning and giving out Maundy money there. Holy Thursday is part