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
Sunday Germanic term is a Germanic interpretation of Latin "dies solis" ("day of the sun"), which is a translation of the Ancient Greek "heméra helíou". The p-Celtic Welsh language also translates the Latin "day of the sun" as "dydd Sul". In most Indian languages, the word for Sunday is "Ravivāra" or "Adityavāra" or its derived forms — "vāra" meaning day, "Aditya" and "Ravi" both being a style (manner of address) for Surya i.e. the Sun and Suryadeva the chief solar deity and one of the Adityas. Ravivāra is first day cited in Jyotisha, which provides logical reason for giving the name