Determination of the day of the week day of the week begins by starting from an ‘anchor date’: a known pair (such as January 1, 1800 as a Wednesday), determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical day of the week. One standard approach is to look up (or calculate, using a known rule) the value of the first day of the week of a given century, look up (or calculate, using a method of congruence) an adjustment for the month, calculate the number of leap years
Day of the German-speaking Community the German-speaking area ("Gebiet") of Belgium; outside this area, it shall be hoisted on the buildings which, because of their use, are ascribed to the German-speaking Community or are temporarily put at its disposal. In the German-speaking area of Belgium, the flag shall be further hoisted on the administrative buildings under the same conditions and on the same days as the Belgian national flag. Source: Official website of the German-speaking Community Day of the German-speaking Community The Day of the German-speaking Community is a holiday in Belgium celebrated on 15 November each year. It is a public holiday for the