Determination of the day of the week ISO 8601. The day designated with 7 may also be counted as "0", by applying the arithmetic modulo 7, which calculates the remainder of a number after division by 7. Thus, the number 7 is treated as 0, 8 as 1, 9 as 2, 18 as 4 and so on. If Sunday is counted as day 1, then 7 days later (i.e. day 8) is also a Sunday, and day 18 is the same as day 4, which is a Wednesday since this falls three days after Sunday. The basic approach of nearly all of the methods to calculate the
Pick of the Week (radio) decision which caused some controversy at the time. Chris Serle became the new host and remained so until 1998 when as part of controller James Boyle's changes to Radio 4, it started to be hosted by guest presenters each week, a format which survives to the present day. Since 2008, a special "Pick of the Year" episode has been broadcast each December with a guest presenter choosing their BBC radio highlights of the year. Pick of the Week (radio) Pick of the Week is a long-running British radio programme featuring extracts from BBC radio (and originally television) programmes broadcast over