Determination of the day of the week day of the week begins by starting from an ‘anchor date’: a known pair (such as January 1, 1800 as a Wednesday), determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical day of the week. One standard approach is to look up (or calculate, using a known rule) the value of the first day of the week of a given century, look up (or calculate, using a method of congruence) an adjustment for the month, calculate the number of leap years
Responsories for Holy Week text are by Tomás Luis de Victoria (two settings for four voices: 1572 and 1585), Carlo Gesualdo (five voices: 1603; six voices: 1611), and Pablo Casals (mixed choir: 1932). Based on . A german version of the text of this responsory is set as "Der Gerechte kömmt um". Poulenc set it as the seventh of his "Sept répons des ténèbres". The three lessons for the third nocturn of Holy Saturday are , and respectively. Sixth of Poulenc's "Sept répons des ténèbres" Responsories for Holy Week Responsories for Holy Week (Latin: Responsoria pro hebdomada sancta) are three sets of nine responsories,