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 week is where the positive modulus is chosen. The value of is obtained from the following table: The value of is obtained from the following table, which depends on the calendar. For the Gregorian calendar, For the Julian calendar, Charles Lutwidge Dodgson (Lewis Carroll) devised a method resembling a puzzle, yet partly tabular in using the same index numbers for the months as in the "Complete table: Julian and Gregorian calendars" above. He lists the same three adjustments for the first three months of non-leap years, one 7 higher for the last, and gives cryptic instructions for finding the rest;