Determination of the day of the week determined for the latter part of the analysis. By using a given day August 13, 2009 which was a Thursday as a reference, with "Base" and "n" being the number of days and weeks it has been since 01/01/0001 to the given day, respectively and "k" the day into the given week which must be less than 7, "Base" is expressed as Knowing that a year divisible by 4 or 400 is a leap year while a year divisible by 100 and not 400 is not a leap year, a software program can be written to find the number of
Wales when local parishes would celebrate the patron saint of their local church. This celebration died out in the 19th century, to be replaced by Saint David's Day, which is celebrated on 1 March throughout Wales, and by Welsh expats around the world. Commemorating the patron saint of friendship and love, Dydd Santes Dwynwen's popularity has been increasing recently. It is celebrated on 25 January in a similar way to St Valentine's Day: by exchanging cards and by holding parties and concerts. Calan Gaeaf, associated with the supernatural and the dead, is observed on 1 November (All Saints Day). It has