Calendrical calculation
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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 the section on calculation in that article for details).
- The number of days between two dates, which is simply the difference in their Julian day numbers.
- The dates of moveable holidays, like Christian Easter (the calculation is known as Computus) followed up by Ascension Thursday and Pentecost or Advent Sundays, or the Jewish Passover, for a given year.
- Converting a date between different calendars. For instance, dates in the Gregorian calendar can be converted to dates in the Islamic calendar with the Kuwaiti algorithm.
- Calculating the day of the week.
Calendrical calculation is one of the five major Savant syndrome characteristics.
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References
- Edward M. Reingold and Nachum Dershowitz. Calendrical Calculations: The Ultimate Edition. Cambridge University Press; (2018). Template:ISBN
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Calendrical calculation" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.
