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John Colet (January 1467 – 16 September 1519) was an English Catholic priest and educational pioneer. Colet was an English scholar, Renaissance humanist , theologian, member of the Worshipful Company of Mercers , and Dean of St Paul's Cathedral , London.
Since in the Gregorian calendar there are 146,097 days, or exactly 20,871 seven-day weeks, in 400 years, the anchor day repeats every four centuries. For example, the anchor day of 1700–1799 is the same as the anchor day of 2100–2199, i.e. Sunday. The full 400-year cycle of doomsdays is given in the adjacent table.
A calendrical calculation is a calculation concerning calendar dates. Calendrical calculations can be considered an area of applied mathematics. Some examples of calendrical calculations: Converting a Julian or Gregorian calendar date to its Julian day number and vice versa (see § Julian day number calculation within that article for details).
The golden number of any Julian or Gregorian calendar year can be calculated by dividing the year by 19, taking the remainder, and adding 1. (In mathematics this can be expressed as (year number modulo 19) + 1.) For example, 2025 divided by 19 gives 106, remainder 11. Adding 1 to the remainder gives a golden number of 12.
The International Fixed Calendar (also known as the Cotsworth plan, the Cotsworth calendar, the Eastman plan or the Yearal) [1] was a proposed reform of the Gregorian calendar designed by Moses B. Cotsworth, first presented in 1902. [2] The International Fixed Calendar divides the year into 13 months of 28 days each.
Few names are more closely associated with watch collecting than that of musician John Mayer.The seven-time Grammy-winning singer, songwriter, and producer has been collecting high complication ...
The calendar can perform as a 30-year cycle, by extending the 19-year Metonic cycle to use six 5-year cycles, with a 30-day intercalary month dropped once every 30 years. [11] But whether it was a 19-year or 30-year calendar is unknown.
Zeller's congruence is an algorithm devised by Christian Zeller in the 19th century to calculate the day of the week for any Julian or Gregorian calendar date. It can be considered to be based on the conversion between Julian day and the calendar date.