[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. .... The Julian 
calendar day Thursday, 4 October 1582 was followed by the first day .... Even 
though the year used for dates changed, the civil year always displayed its 
months in... [DOC] [TLE] Old Style and New Style dates - Wikipedia [PAR] Old Style (O.S.) and New Style (N.S.) are sometimes used with dates to indicate 
whether the ... But the start of the Julian year was not always 1 January, and was 
altered at different times in different countries. ... During the years of transition 
between the first introduction of the Gregorian calendar in continental Europe 
and its... [DOC] [TLE] History Of Our Calendar | Calendars - Webexhibits [PAR] By the time he reformed the Julian calendar in 1582 (using the observations of ... 
In the Middle Ages, the study of the measure of time was first viewed as ... Why do 
the 9th thru 12th months have names that mean 7th, 8th, 9th and 10th? ... Since 
about 1600 most countries have used 1 January as the first day of the year. [DOC] [TLE] 1752 Calendar Change - Colonial Records & Topics - LibGuides at ... [PAR] Oct 4, 2016 ... Today, Americans are used to a calendar with a "year" based the earth's rotation 
... Because the year began in March, records referring to the "first month" pertain 
to March; ... January 1 was established as the first day of the new year. ... 
Between 1582 and 1752, not only were two calendars in use in Europe... [DOC] [TLE] A History of the New Year - Infoplease [PAR] The calendar had just ten months, beginning with March. ... The first time the new 
year was celebrated on January 1st was in Rome in 153 B.C. (In fact, the month 
... In 1582, the Gregorian calendar reform restored January 1 as new year's day. [DOC] [TLE] From Julian to Gregorian Calendar - Timeanddate.com [PAR] The Gregorian calendar was first introduced in 1582, however, different ... short 
months with only 18 days and odd dates like February 30 during the year of ... 
Turkey was the last country to officially switch to the new system on January 1, 
1927. [DOC] [TLE] History of the Calendar [PAR] By the year 1582 the calendar had shifted out of sync with the seasons by about 
... The medieval poet Dante wrote that eventually January would no longer be 
part of ... First of all, the word "month" originated with the word for "moon" 
because a... [DOC] [TLE] 6 Things You May Not Know About the Gregorian Calendar - History ... [PAR] Sep 13, 2012 ... Explore the history of the Gregorian calendar, which Britain and its colonies ... to 
track their days, months and years using the centuries-old system, ... In 1582, 
when Pope Gregory XIII introduced his Gregorian calendar, ... Julius Caesar's 
calendar reform of 46 B.C. instituted January 1 as the first of the year. [DOC] [TLE] Why Does the New Year Start on January 1? | Mental Floss [PAR] Dec 31, 2011 ... In common usage, January 1 was still the first day of the year, as regular non-
clergy, ... By 1582, the difference had grown to 10 days. ... Could someone write 
an article why we have 12 months of different numbered lengths... [DOC] [TLE] Why Does the New Year Begin on January First in Many Countries? [PAR] Jan 30, 2014 ... Jamie asks: Why is New Year's day January 1st? ... had commonly used the 
name of the two consuls to identify a specific year in question. ... issued the Inter 
gravissimas on February 24, 1582, and nearly eight months later,... [DOC] [TLE] HISTORY of the CALENDAR - Walk in the Light ..Sharing the ... [PAR] Through accidents of history, the Gregorian Calendar has come to be used ... 
been made in this calendar since it was decreed by Pope Gregory in 1582. ... 
Therefore, the first calendars defined a lunar year,

Question: January is the first month of the year on this, first used in 1582
Answer: the Gregorian calendar