Btw, the Romans had leap days before Julius Caesar, but they were added ad hoc by the Pontifex Maximus.
Caesar happened to be the Pontifex Maximus (an office you hold for life once elected to), but he wasn't in Rome much to do that job. So after he came back from hanging out with Cleopatra in Egypt he came back and set the calendar on auto-pilot.
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Btw, the Romans had leap days before Julius Caesar, but they were added ad hoc by the Pontifex Maximus.
Caesar happened to be the Pontifex Maximus (an office you hold for life once elected to), but he wasn't in Rome much to do that job. So after he came back from hanging out with Cleopatra in Egypt he came back and set the calendar on auto-pilot.