Intelligence Bureau for the East himself, recruits to the Bureau included Franz von Papen, later briefly the Chancellor of the Weimar Republic, Wilhelm Wassmuss (sometimes referred to as the German Lawrence), Gunther von Wesendonck, Ernst Sekunna and others. Oppenheim was replaced in 1915 by Schabinger von Schowingen, and later in 1916 by Eugen Mittwoch, internationally the most respected and prestigious German orientalist (and also a respected Orthodox Jewish scholar), who recruited more liberal and cosmopolitan people for the Nachrichtenstelle such as Friedrich Schrader, his Swiss associate Max Rudolf Kaufmann or the young Nahum Goldmann (later President of the World Jewish Congress). In its initial period,
Determination of the day of the week his collected works in 1927. Gauss' method was applicable to the Gregorian calendar. He numbered the weekdays from 0 to 6 starting with Sunday. He defined the following operation: The weekday of 1 January in year number is where is the remainder after division of by , or modulo . This formula was also converted into graphical and tabular methods for calculating any day of the week by Kraitchik and Schwerdtfeger. Another variation of the above algorithm likewise works with no lookup tables. A slight disadvantage is the unusual month and year counting convention. The formula is where For example,