Calendrical calculation
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 date of a religious holiday, like Easter (the calculation is known as Computus) or 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.
References
- Edward M. Reingold and Nachum Dershowitz. Calendrical Calculations. Cambridge University Press; 3 edition (December 10, 2007). ISBN 978-0-521-88540-9
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