Determination of the day of the week day of the week begins by starting from an ‘anchor date’: a known pair (such as January 1, 1800 as a Wednesday), determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical day of the week. One standard approach is to look up (or calculate, using a known rule) the value of the first day of the week of a given century, look up (or calculate, using a method of congruence) an adjustment for the month, calculate the number of leap years
That Was the Week That Was Four to celebrate the 40th anniversary. In a list of the 100 Greatest British Television Programmes up by the British Film Institute in 2000, voted by industry professionals, "That Was The Week That Was" placed 29th. Sherrin attempted to revive the formula with "Not So Much a Programme, More a Way of Life" but was less successful. An American version was on NBC, initially as a pilot episode on 10 November 1963, then as a series from 10 January 1964 to May 1965. The pilot featured Henry Fonda and Henry Morgan, guests Mike Nichols and Elaine May, and supporting performers