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
German Unity Day in the respective annual celebration to represent the modern borders of Germany. German Unity Day The Day of German Unity () is the national day of Germany, celebrated on 3 October as a public holiday. It commemorates the anniversary of German reunification in 1990 when the goal of a united Germany, that originated in the middle of the 19th century, was fulfilled (with the exception of Austria and the German cantons in Switzerland). Therefore, the name addresses neither the re-union nor the union, but the unity of Germany. The Day of German Unity on 3 October has been the German