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
The Week in Politics The Week in Politics The Week in Politics is an Irish news and current affairs programme broadcast on RTÉ One and RTÉ News Now. It is presented by Áine Lawlor, occasionally by David McCullagh or Bryan Dobson. In its original format in 1996 it was hosted by Caroline Erskine and Seán Duignan. The programme reflects on the political week, with interviews and discussions. The majority of guests are politicians who are Teachtaí Dála or Irish Senators. The programme is broadcast live at noon on Sunday and is repeated throughout the day on RTÉ News Now and its traditional late night