Names of the days of the week the "first day". This convention is also found in some Austronesian languages whose speakers were converted to Christianity by European missionaries. In Slavic languages, some of the names correspond to numerals after Sunday: compare Russian "vtornik" "Tuesday" and "vtoroj" "the following", "chetverg" "Thursday" and "chetvertyj" "the fourth", "pyatnitsa" "Friday" and "pyatyj" "the fifth"; see also the Notes. In Standard Chinese, the week is referred to as the cycle of the stars (). The modern Chinese names for the days of the week are based on a simple numerical sequence. The word for "week" (which is literally translated to "star day")
Determination of the day of the week example, that January 1995 is to be treated as month 13 of 1994. The formula for the Gregorian calendar is where The only difference is one between Zeller’s algorithm () and the Gaussian algorithm (), that is . So we can get the values of months from those for the Gaussian algorithm by adding one: In a partly tabular method by Schwerdtfeger, the year is split into the century and the two digit year within the century. The approach depends on the month. For , so is between 0 and 99. For , The formula for the day of the