Responsories for Holy Week nocturn of Maundy Thursday are from Saint Augustines "Enarrationes in Psalmos" Second of Poulenc's "Sept répons des ténèbres". The lessons for the third nocturn of Maundy Thursday are from 1 Corinthians II: 17-34 First of Poulenc's "Sept répons des ténèbres". Good Friday is the sixth day (Latin: Feria VI or Feria Sexta) of the Holy Week. In Latin the occasion is also indicated as "In Parasceve" (Parasceve being Latin for Friday). Thus the second set of nine responsories for Holy Week can appear under titles such as "Feria VI – In Parasceve". The lessons of the first nocturn of Good
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;