Responsories for Holy Week of the Lord", referring to the Last Supper). Thus the first nine responsories for Holy Week can appear under titles such as "Feria V – In Coena Domini". When the naming is according to the preceding day, names like "Les neuf répons du mercredi saint" (The nine responsories of Holy Wednesday) can occur (Charpentier). The lessons of the first nocturn of Maundy Thursday are from Lamentations 1:1-14 (1:1–5, 1:6–9 and 1:10–14 respectively). The first responsory for Maundy Thursday sets the scene at Mount Olivet (in monte Oliveti), the episode referred to as the Agony of Christ at Gethsemane. The text
Determination of the day of the week G. Leap years have two Sunday Letters, so for January and February calculate the day of the week for 1 January and for March to December calculate the day of the week for 1 October. Leap years are all years which divide exactly by four with the following exceptions: In the Gregorian calendar – all years which divide exactly by 100 (other than those which divide exactly by 400). In the Revised Julian calendar – all years which divide exactly by 100 (other than those which give remainder 200 or 600 when divided by 900). Use this table for finding