The determination of the day of the week for any date may be performed with a variety of algorithms. In addition, perpetual calendars require no calculation...

were insufficiently accurate to be compared against solar noon for the determination of a ship's longitude (as an error of just four minutes would correspond...

business by radio or telephone on the four days of the week which were weekdays on both sides. To eliminate this anomaly, Kiribati introduced a change...

day Leap year Lunar Lunisolar Solar Solstice Tropical year Weekday determination Weekday names Archaeology and geology Chronological dating Geologic...

Doomsday rule, Doomsday algorithm or Doomsday method is an algorithm of determination of the day of the week for a given date. It provides a perpetual calendar...

months and the solar year, while also accounting for the month, date, and weekday of the Julian or Gregorian calendar. The complexity of the algorithm arises...

film. It's a constant reminder to be careful. It also bolstered my determination to make this my last year with the series. Four seasons are enough of...

Historically, the system of dominical letters (letters A to G identifying the weekday of the first day of a given year) has been used to facilitate calculation...

Most games are played on Saturday and Sunday afternoons, with occasional weekday evening fixtures. The competition was founded as the FA Premier League...

of the week after the leap year began. Every four years, the starting weekday advances five days, so over a 28-year period, it advances 35, returning...