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 East Germany, even with the name "Day of the German Unity". Since 1963, it was proclaimed by the President of the Federal Republic as "National Day of Memorial of the German People". However by the mid-1960s as hope faded that the two Germanies would ever be re-united, this date became more of a holiday and opportunity to drink than a day to consider national unity. In the year 1990, the "Day of German Unity" was celebrated twice, on this date and on October 3. In East Germany, the Founding Day in 1949 would be celebrated on 7 October as