Determination of the day of the week the day of the week without any calculations. Examples: December is in row F and 26 is in column E, so the letter for the date is C located in row F and column E. 93 (year mod 100) is in row D (year row) and the letter C in the year row is located in column G. 18 ([year/100] in the Gregorian century column) is in row C (century row) and the letter in the century row and column G is B, so the day of the week is Tuesday. October 13 is a F day. The letter F
Dienstag aus Licht As was the case for most of the operas in the "Licht" cycle, component sections of "Dienstag" were commissioned and composed separately, and given seriatim premieres. The first component of this opera was in fact the first part of the entire "Licht" cycle to be composed: "Jahreslauf" (Course of the Years), which became the first act of "Dienstag", was originally written in 1977 as an independent piece for gagaku ensemble. Stockhausen finished it in Kyoto in the fall of 1977, and it was premiered by the Imperial Gagaku Ensemble at the Tokyo National Theatre on 31 October. This version is