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GREGORY XIII
1502 - 1585
Ugo Boncompagni was Pope Gregory XIII from 1572-1585.
Gregory's calendar, also called the
New Style Calendar, is the one you and I are using today.
Before the
Gregorian Calendar there was
the Julian Calendar. What's the difference between the
Gregorian and the Julian Calendar?
Encyclopedia Britannica explains,
The Gregorian
calendar differs from the Julian only in that no century year is
a leap year unless it is exactly divisible by 400 (e.g., 1600,
2000).
A further
proposed refinement, the designation of years evenly divisible
by 4,000 as common (not leap) years, will keep the Gregorian
calendar accurate to within one day in 20,000 years.
When Gregory googled a map, it looked
something like this:
16th Century World Map
Check also
index
of all popes.
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