Mondo Knows Facts
Ten days were erased when the Gregorian calendar was introduced
Pope Gregory XIII skipped ten calendar dates in 1582 to realign equinoxes
When Pope Gregory XIII introduced the Gregorian calendar in October 1582 to replace the Julian calendar, ten days were skipped to realign the calendar with the spring equinox. In Catholic countries, Thursday 4 October 1582 was immediately followed by Friday 15 October 1582.
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Tags: calendar, history, time
Ten days were erased when the Gregorian calendar was introduced: the short answers
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- Pope Gregory XIII skipped ten calendar dates in 1582 to realign equinoxes. The figure is taken from Time and Date, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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