I want to do a spreadsheet which uses today() and to cross reference that with a value - for example dates between 4th April 2011 and 10th April 2011 would return a value of "Week 1 Set 1" . The values rotate every 96 days (Week 1 Set 1 to Week 4 Set 3)> Presumably the only way to do this is to have a sheet with the values in and to cross reference the result from today() ?