calcal: Calendrical Calculations

An R implementation of the algorithms described in Reingold and Dershowitz (4th ed., Cambridge University Press, 2018) <doi:10.1017/9781107415058>, allowing conversion between many different calendar systems. Cultural and religious holidays from several calendars can be calculated.

Package details

AuthorRob Hyndman [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-2140-5352>), Edward Reingold [cph, ctb] (Original Lisp code), Nachum Dershowitz [cph, ctb] (Original Lisp code)
MaintainerRob Hyndman <Rob.Hyndman@monash.edu>
LicenseApache License (>= 2)
Version1.0.3
URL https://pkg.robjhyndman.com/calcal/ https://github.com/robjhyndman/calcal
Package repositoryView on CRAN
Installation Install the latest version of this package by entering the following in R:
install.packages("calcal")

Try the calcal package in your browser

Any scripts or data that you put into this service are public.

calcal documentation built on Feb. 25, 2026, 9:07 a.m.