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 Milan, but on 7 May 1991 the new Sovrintendente of La Scala, Carlo Fontana, wrote Stockhausen to say cuts to government support of La Scala had forced cancellation of the premiere there in 1992 as planned, and subsequent correspondence led to the release of rights for the premiere . "Dienstag" was given its staged premiere on 28 May 1993 by the Leipzig Opera. Subsequent performances were on 29 and 30 May. The stage realisation was by Uwe Wand, Henryk Tomaszewski, and Johannes Conen. Karlheinz Stockhausen was the music director and sound projectionist. The actor-mimes were members of the Tomaszewski Pantomime