Object of the week 2020/1

‘Gregory XIII’ (about 1581) printed by Anton Eisenhout, British Museum, London

Monday, February 24, 2020
1:01 AM 1:01 AM 01:01 01:01
Google Calendar ICS

Today in 1582 the pope announced a new style of calendar. Known as Gregorian, it’s the one we follow today, complete with leap years and leap centuries …

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