Determination of the day of the week row C) to find the dominical letter that is E. The letter for September 18 is B, so the day of the week is Thursday. Use 16 (in the Julian century row, column E) and 76 (in row D) to find the dominical letter that is A. February 23 is a "D" day, so the day of the week is Wednesday. In a handwritten note in a collection of astronomical tables, Carl Friedrich Gauss described a method for calculating the day of the week for 1 January in any given year. He never published it. It was finally included in
Valentine's Day Movie Day, and Hug Day. Korean women give a much higher amount of chocolate than Japanese women. In Taiwan, traditional Qixi Festival, Valentine's Day and White Day are all celebrated. However, the situation is the reverse of Japan's. Men give gifts to women on Valentine's Day, and women return them on White Day. In the UK, just under half of the population spend money on their Valentines and around £1.3 billion is spent yearly on cards, flowers, chocolates, and other gifts, with an estimated 25 million cards being sent. In Wales, some people celebrate Dydd Santes Dwynwen ("St Dwynwen's Day")