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
Welsh units homestead for purposes of inheritance &c., varying its size depending on the social status of the owner. The homestead of a nobleman (') was 12 Welsh acres, that of a serf ( ', ') had 8, and that of a bondsman or slave ( ') had 4. The text, however, notes the uncommonness of this division and says it was generally understood as 4 acres regardless of status. In the Dimetian Code used in southern Wales, the same divisions were reckoned differently: The Welsh seem to have used an eight- or nine-day week, rather than a seven-day one, long after