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
Owain Owain for the Welsh Language Society as the secretary of the first branch, at Bangor. Owain also sketched the society's logo (a red dragon's tongue) which continues to be their badge and logo. This early sketch can be seen at the National Library of Wales, Aberystwyth and on his official website (see below). Leading politician Dafydd Iwan says on his website, "He inspired my generation and laid down strong foundations on which the Welsh Language Society was built." His science fiction book entitled "Y Dydd Olaf" ("The Last Day") was described by the Welsh literary critic Pennar Davies in the book's