October 4 1582 CE – Pope Gregory XIII’s Calendar Becomes Official

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October 4 1582 CE – Pope Gregory XIII’s Calendar Becomes OfficialRate this post Though it may seem difficult to contemplate, the current layout of the international calendar is a fairly recent invention. Six months after it debuted in the Inter gravissimas papal bull, Pope Gregory XIII officially instituted a corrected calendar in Catholic territories on October 4, 1582. Due to the discrepancies of the Julian calendar, the following day in countries like Portugal and Spain was the 15th instead of the 5th. The problem with the system introduced by Julius Caesar in 46 BCE, according to Gregory and his fellow leaders of the Catholic Church, had to do with a […]