[DOC] [TLE] Pope Gregory XIII - Wikipedia [PAR] Pope Gregory XIII born Ugo Boncompagni, was Pope of the Catholic Church from 
13 May 1572 to his death in 1585. He is best known for commissioning and being 
the namesake for the .... instituted when Gregory decreed, by the papal bull Inter 
gravissimas of 24 February 1582, that the day after Thursday, 4 October 1582... [DOC] [TLE] Gregorian calendar - Wikipedia [PAR] The Gregorian calendar is internationally the most widely used civil calendar. It is 
named after Pope Gregory XIII, who introduced it in October 1582. ... His proposal 
included reducing the number of leap years in four centuries from 100 to 97, ... 
This year-numbering system, also known as Dionysian era or Common Era, is 
the... [DOC] [TLE] Pope Gregory XIII 1502-1585 - World History for the Relaxed Historian [PAR] In 1582, Pope Gregory announced a revision of the calendar. His new version 
became known as the New Style Calendar, or the Gregorian Calendar, and is the
... [DOC] [TLE] Gregory XIII Facts - Biography - YourDictionary [PAR] Gregory XIII (1502-1585) was pope from 1572 to 1585. ... which eventually 
became known as the Gregorian University in his honor, Gregory had ... In 1582 
he promulgated the revision of the calendar, supplanting the Julian with the 
Gregorian. [DOC] [TLE] CATHOLIC ENCYCLOPEDIA: Pope Gregory XIII - New Advent [PAR] Like his holy predecessor, Gregory XIII spared no efforts to further an ... 
Romanum) he built in 1582 the large edifice known as the Collegio Romano 
which was... [DOC] [TLE] Pope Gregory XIII Biography (Pope/Religious Figure) - Infoplease [PAR] Biography of Pope Gregory XIII, The pope who changed the calendar in 1582. ... 
in 1539 and held offices under popes Julius III, Pius IV and Pius V during his 
career. ... Elizabeth I in England, but he's mostly famous for correcting the 
calendar. By papal decree most Catholic countries went from 15 October 1582 to 
4 October... [DOC] [TLE] The Gregorian Calendar - Timeanddate.com [PAR] 10 days were dropped in October 1582; New rules for calculating Easter-dates ... 
Although the Gregorian calendar is named after Pope Gregory XIII, it is an 
adaptation of a ... astronomer and philosopher Luigi Lilio (also known as Aloysius 
Lilius). He was born around 1510 and died in 1576, six years before his calendar 
was... [DOC] [TLE] From Julian to Gregorian Calendar - Timeanddate.com [PAR] The Gregorian Calendar, also known as the Western or Christian Calendar, is the 
... The papal bull issued by Pope Gregory XIII in 1582, decreed that 10 days be ... 
This Revised Julian calendar uses even more complex rules to determine... [DOC] [TLE] Nicephorus Gregoras - OrthodoxWiki [PAR] Dec 12, 2011 ... His most famous work, the Byzantine History, also known as Roman ... that 
anticipated the calendar revision of 1582 by Pope Gregory XIII. [DOC] [TLE] Going Gregorian, 1582-1752: A Summary View - JStor [PAR] In 1582 the papal decree of Gregory XIII dropped ten days from the. Julian 
calendar .... papacy of Greg ory XIII and his reform of Julius Caesar's calendar of 
so long before. ... scheme enough to assure the revised calendar's continuation 
to the present day and .... What came to be known in the folklore of perfidy as 
Pope Day... [DOC] [TLE] Difference between revisions of "Chapter 19: 190-198" - Thomas ... [PAR] Revision as of 10:50, 19 January 2010 (view source) ... introduced in 1582 by 
Pope Gregory XIII and at first adopted by only Catholic countries, was not ... From 
1752 until his death, Macclesfield was president of the Royal Society. ... a fact: 
the Act of Parliament is sometimes known as Chesterfield's Act. Deafness, 
however,... [DOC] [TLE] Gregory XIII - Web - Search the Now: Waazon [PAR] Introduced by Pope Gregory XIII in 1582, it is known as the system that ... It's 
because, in 1582, Pope Gregory XIII revised the Julian calendar and stated that 
... but all Italy knew that Gregory XIII was more than a little worldly; after all, his

Question: Gregory XIII is famous for his revision of this in 1582
Answer: The Calendar