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321 in History

Browse historical records dated to 321. Records are rendered from the World History Database into this page's initial HTML.

1 record

Historical Events in 321

321

Observance-Sundays

Constantine I the Great · Roman Empire

Constantine declares Sunday to be an Empire-wide day of rest in honour of the Sun

Provenance

About these year records

These entries are read from the World History Database date API and written into static HTML. Dates, names and descriptions are reviewed and normalised as the database develops.

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