Determination of the day of the week row C) to find the dominical letter that is E. The letter for September 18 is B, so the day of the week is Thursday. Use 16 (in the Julian century row, column E) and 76 (in row D) to find the dominical letter that is A. February 23 is a "D" day, so the day of the week is Wednesday. In a handwritten note in a collection of astronomical tables, Carl Friedrich Gauss described a method for calculating the day of the week for 1 January in any given year. He never published it. It was finally included in
IAU 50 km World Championships European Championship and World Trophy places matched on the women's side, with Heather Foundling-Hawker winner of both. The European Championship was abandoned after the launch of the World Championships. It had only been held twice (Mario Ardemagni and Danielle Sanderson were the 2004 winners). IAU 50 km World Championships The IAU 50 km World Championships is an annual, global ultrarunning competition over 50 kilometres organized by the International Association of Ultrarunners (IAU). The competition began life as the IAU 50 km World Trophy in 2005. It served as the final leg of the IAU 50 km Challenge circuit, with runners