Responsories for Holy Week Maundy Thursday and Good Friday respectively, rather than on a sequence of names referring to Maundy Thursday, Good Friday and Holy Saturday respectively. The responsories following each lesson of these matins (so also 27) were usually sung, and these are the Tenebrae Responsoria, or the Responsories for Holy Week. The name of a collection of such responsories may also refer to the Holy Triduum, as in Orlande de Lassus' "". Maundy Thursday is the fifth day of the Holy Week (Latin: Feria V or Feria Quinta). In Latin the feast is also indicated as "In Cœna Domini" ("At the meal
Holy Week Passion Week (the week before Holy Week) to the level of a commemoration, and in 1969 the celebration was removed from the General Roman Calendar as a duplicate of the September feast. Observance of the calendar as it stood in 1962 is still permitted as an extraordinary form of the Roman Rite, and even where the calendar as revised in 1969 is in use, some countries, such as Malta, have kept it in their national calendars. In every country, the 2002 edition of the Roman Missal provides an alternative collect for this Friday: <poem> O God, who in this season