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
Goleuddydd Goleuddydd Goleuddydd ("light of day" from the Welsh "golau", "light", and "dydd", "day"), in the Middle Welsh prose tale "Culhwch ac Olwen", is the daughter of Amlawdd Wledig, and is desired by Cilydd, who marries her. She becomes pregnant with his child, but becomes mad and turns to wandering the countryside. When she is near to giving birth, her senses return, and she takes shelter with a swineherd. Frightened by the pigs, she gives birth to a boy, apparently in a pig run. The swineherd takes the baby away to be baptised as Culhwch; he becomes the protagonist of "Culhwch