Crate calendrical_calculations

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Calendrical calculations

This crate implements algorithms from Calendrical Calculations by Reingold & Dershowitz, Cambridge University Press, 4th edition (2018) as needed by ICU4X.

Most of these algorithms can be found as lisp code in the book or on GithHub.

The primary purpose of this crate is use by ICU4X, however if non-ICU4X users need this we are happy to add more structure to this crate as needed.

Modules§

  • astronomy 🔒
    This file contains important structs and functions relating to location, time, and astronomy; these are intended for calender calculations and based off Calendrical Calculations by Reingold & Dershowitz.
  • chinese_based
    Chinese-like lunar calendars (Chinese, Dangi)
  • coptic
    The Coptic calendar
  • error 🔒
    Error handling
  • ethiopian
    The ethiopian calendar
  • hebrew
    The Hebrew calendar
  • hebrew_keviyah
    Alternate, more efficient structures for working with the Hebrew Calendar using the keviyah and Four Gates system
  • helpers
    Additional math helpers
  • islamic
    Various islamic lunar calendars
  • iso
    The ISO calendar (also usable as Gregorian)
  • julian
    The Julian calendar
  • persian
    The persian calendar
  • rata_die
    Representation of Rata Die (R.D.) dates, which are represented as the number of days since ISO date 0001-01-01.