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 Working Group on Star Names IAU Working Group on Star Names The International Astronomical Union (IAU) established a Working Group on Star Names (WGSN) in May 2016 to catalog and standardize proper names for stars for the international astronomical community. It operates under Division C Education, Outreach and Heritage. The IAU states that it is keen to make a distinction between the terms "name" and "designation". To the IAU, "name" refers to the (usually colloquial) term used for a star in everyday speech, while "designation" is solely alphanumerical and used almost exclusively in official catalogues and for professional astronomy. (The WGSN notes that transliterated Bayer