Julian calendar

Caesar's calendar of 365 days and a leap day every fourth year, in effect from 1 January 45 BCE and trimmed in 1582.

Concept

1 Jan 45 BCE O.S. –

Over time

invented by
Julius Caesar

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Identifiers
Wikidata Q11184

Sources

Relations

designed by:
  • Pliny credits him with advising Caesar.

    Sources: ,

invented by:
  • Julius Caesarsince 46 BCE O.S.

    Reform worked out with the astronomer Sosigenes.

    Sources:

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