Determination of the day of the week in the year row (07) is located in column G. The letter in the century row (13) and column G is E, so the day of the week is Friday. January 1 corresponds to G, G in the year row (00) corresponds to F in the century row (20), and F corresponds to Saturday. A pithy formula for the method: ""Date letter (G), letter (G) is in year row (00) for the letter (F) in century row (20), and for the day, the letter (F) become weekday (Saturday)"". Use 17 (in the Gregorian century row, column C) and 83 (in
Holy Week "Great and Holy Week", or "Passion Week". Since the Orthodox liturgical day starts at sunset (as it has from antiquity), Holy Monday services begin Sunday evening, at the normal timing for Monday Vespers (Vespers is the first service of the day). However, during Holy Week, in most parishes, many service times are advanced from six to twelve hours in time and celebrated in anticipation, which permits more of the faithful to attend the most prominent services. Thus, it is the matins service of Great Monday that is on "Palm Sunday" evening in parish churches and often vespers is in the