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
Armenian calendar co-incided with 24 July 2012 of the Gregorian calendar. An analytical expression of the Armenian date includes ancient name of Day of week, Christian name of Day of week, named Day of month, Date, Month, Year number after 552 A.D. and the religious feasts. The Armenian calendar is divided into 12 months of 30 days each, plus an additional (epagomenal) five days are called "aweleacʿ" ("superfluous"). Years are usually given in Armenian numerals, letters of the Armenian alphabet preceded by the abbreviation for "t’vin" "in the year" (for example, "in the year 1455"). The Armenian month names show influence of