Holy Week baroque composers were usually intended for performance during the evening of Holy Wednesday, Maundy Thursday and Good Friday. In the Orthodox Church, the forty days of Great Lent end on the Friday before Palm Sunday. The two days that follow, Lazarus Saturday and Palm Sunday, form a transition to Holy Week, neither in Lent nor in Holy Week themselves, but in combination with Holy Week containing the continuing observances in preparation for Pascha (Easter), during which the faithful continue to fast. Lazarus Saturday commemorates Jesus' raising of Lazarus from the dead, just before he went to Jerusalem himself. The main
Adoption of the Gregorian calendar 12 days, only 11 were skipped, and the day of the week was repeated on successive days, because at the same time the International Date Line was moved, from following Alaska's eastern border with Canada to following its new western border, now with Russia. Many of the countries of eastern Europe were Eastern Orthodox or Islamic and adopted the Gregorian calendar much later than western Christian countries. Roman Catholic countries such as the Polish–Lithuanian Commonwealth adopted the "new style" (N.S.) Gregorian calendar in 1582 (switched back in 1795 after Third Partition of Poland), but the switch to the Gregorian calendar