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List of calendars

A Tunisian calendar showing Islamic, Gregorian and Berber dates

This is a list of calendars.

Ancient or traditional

The following are calendar systems used in antiquity, in many cases undergoing various reform over time, and fraught with uncertainties of reconstruction.

Ancient Near East
Hellenic-derived and Christian
East Asia
South Asia
Other Eurasian
Pre-Columbian Americas

Historical calendars

The following are specific calendars known to have been in use during some specific time period (and partially still in use today), with a specific date of introduction.

Further information: Calendar era

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Reform calendars

The following are proposed reforms of the Gregorian calendar

Non-Earth calendar proposals



See also