Why does February only have 28 days?
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In around 45 B.C., Julius Caesar commissioned an expert to put aside the lunar origins of the Roman calendar and make it sun-based, like the Egyptian one. Caesar added 10 days to the calendar year and an extra day in February every four years.
The Gregorian calendar, our modern calendar, was proclaimed in 1582 by Pope Gregory XIII as a reform of the Julian calendar.
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