Editing January 1 (section)

===Pre-1600===
*[[153 BC]] &ndash; For the first time, [[Roman consul]]s begin their year in office on January 1.<ref>{{cite book|first=Arthur Ernest|last=Gordon|author-link=Arthur E. Gordon|title=Illustrated Introduction to Latin Epigraphy|url=https://books.google.com/books?id=ywI6SDUggk4C&pg=PA229|year=1983|publisher=University of California Press|isbn=978-0-520-03898-1|page=229}}</ref>
*[[45 BC]] &ndash; The [[Julian calendar]] takes effect as the civil calendar of the Roman Republic, establishing January 1 as the new date of the new year.<ref>{{cite book|title=Origines Kalendariae Italicae Nundinal Calendars of Ancient Italy, Nundinal of Calendar of Romulus, Calendar of Numa Pompilius, Calendar of the Decemvirs, Irregular Roman Calendar, and Julian Correctio Tables of the Roman Calendar, from V. C. 4 of Varro, B. C. 750, to V. C. 1108 A. D 355. 4 by Edward Greswell, B.D: Vol. 4|url=https://books.google.com/books?id=u-_gTMsfSgIC&pg=PA103|year=1854|publisher=University Press|page=103}}</ref>
*[[42 BC]] &ndash; The [[Roman Senate]] posthumously [[Apotheosis|deifies]] [[Julius Caesar]].<ref>{{cite book|last=Koortbojian|first=Michael|date=2013|title=The Divinization of Caesar and Augustus|url=https://books.google.com/books?id=QZI2AQAAQBAJ|publisher=Cambridge University Press|page=29|isbn=978-0-521-19215-6}}</ref>
* [[193]] &ndash; The Senate chooses [[Pertinax]] against his will to succeed [[Commodus]] as [[Roman emperor]].<ref name="Birley2012">{{cite book|first=Anthony R|last=Birley|author-link=Anthony Birley|title=Marcus Aurelius: A Biography|url=https://books.google.com/books?id=CzYRFge0NnsC&pg=PT15|date=6 December 2012|publisher=Routledge|isbn=978-1-134-69569-0|page=15}}</ref>
*[[AD 404|404]] &ndash; [[Saint Telemachus]] tries to stop a [[gladiator]]ial fight in a Roman [[amphitheatre]], and is [[Stoning|stoned to death]] by the crowd. This act impresses the Christian Emperor [[Honorius (emperor)|Honorius]], who issues a historic ban on gladiatorial fights.<ref>{{cite book|title=The Catholic Worker|url=https://books.google.com/books?id=DlRDAQAAIAAJ|year=1991|page=6}}</ref>
* [[417]] &ndash; [[Emperor Honorius]] forces [[Galla Placidia]] into marriage to [[Constantius III|Constantius]], his famous general (''[[magister militum]]'') (probable).<ref>{{cite book|first=Hagith|last=Sivan|title=Galla Placidia: The Last Roman Empress|url=https://books.google.com/books?id=SDqdL_OKAVgC&pg=PA67|date=15 September 2011|publisher=OUP USA|isbn=978-0-19-537912-9|page=67}}</ref>
* [[947]] &ndash; Emperor [[Emperor Taizong of Liao|Taizong]] of the [[Khitan people|Khitan]]-led [[Liao dynasty]] captures [[Kaifeng|Daliang]], ending the dynasty and empire of the [[Later Jin (Five Dynasties)|Later Jin]].<ref>{{cite book|last=Hung|first=Hing Ming|title=Ten States, Five Dynasties, One Great Emperor: How Emperor Taizu Unified China in the Song Dynasty|location=New York|publisher=Algora Publishing|date=2014|isbn=9781628940725|url=https://books.google.com/books?id=cfhKBAAAQBAJ|pages=26–27}}</ref>
*[[1001]] &ndash; Grand Prince [[Stephen I of Hungary]] is named the first [[King of Hungary]] by [[Pope Sylvester II]] (probable).<ref>{{cite book|first=Attila|last=Zsoldos|title=Saint Stephen and his country: a newborn kingdom in Central Europe: Hungary|url=https://books.google.com/books?id=IgoiAQAAIAAJ|year=2001|publisher=Lucidus|isbn=9789638616395}}</ref>
*[[1068]] &ndash; [[Romanos IV Diogenes]] marries [[Eudokia Makrembolitissa]] and is crowned [[Byzantine Emperor]].<ref>{{cite book|first=Alexander Daniel|last=Beihammer|title=Byzantium and the Emergence of Muslim-Turkish Anatolia, Ca. 1040-1130|url=https://books.google.com/books?id=HyYlDwAAQBAJ&pg=PA134|date=17 February 2017|publisher=Taylor & Francis|isbn=978-1-351-98386-0|pages=134–}}</ref>
*[[1259]] &ndash; [[Michael VIII Palaiologos]] is proclaimed co-emperor of the [[Empire of Nicaea]] with his ward [[John IV Laskaris]].<ref>{{cite book|title=The Cambridge Medieval History Series volumes 1-5|url=https://books.google.com/books?id=9lHeh36S8ooC&pg=PT1682|publisher=Plantagenet Publishing|pages=1682–|id=GGKEY:G636GD76LW7}}</ref>
*[[1438]] &ndash; [[Albert II of Germany|Albert II of Habsburg]] is crowned [[King of Hungary]].<ref>{{cite book|author1=Henry Melvill Gwatkin|author2=James Pounder Whitney|author3=Joseph Robson Tanner|title=The Cambridge Medieval History|url=https://books.google.com/books?id=FXy4gSfjukYC|year=1936|publisher=Macmillan|page=134}}</ref>
*[[1502]] &ndash; The present-day location of [[Rio de Janeiro]], [[Brazil]], is first explored by the [[Portuguese Empire|Portuguese]].<ref>{{cite book|first=David|last=Higgs|title=Queer Sites: Gay Urban Histories Since 1600|url=https://books.google.com/books?id=0oKFAgAAQBAJ&pg=PA138|date=4 January 2002|publisher=Routledge|isbn=978-1-134-72467-3|pages=138–}}</ref>
*[[1515]] &ndash; Twenty-year-old [[Francis I of France|Francis, Duke of Brittany]], succeeds to the [[List of French monarchs|French throne]] following the death of his father-in-law, [[Louis XII of France|Louis XII]].<ref>{{cite book|first=James|last=Bacon|title=The Life and Times of Francis the First, King of France|url=https://books.google.com/books?id=5IYwAQAAMAAJ&pg=PA116|year=1830|publisher=E. Bull|pages=116–}}</ref>
*[[1527]] &ndash; Croatian nobles elect [[Ferdinand I, Archduke of Austria]] as [[King of Croatia]] in the [[1527 election in Cetin]].<ref>{{cite book|title=Encyclopædia Britannica|url=https://books.google.com/books?id=zuJFAAAAYAAJ|year=1973|publisher=Encyclopædia Britannica, inc., William Benton Publisher|isbn=978-0-85229-173-3}}</ref>
*[[1600]] &ndash; [[Kingdom of Scotland|Scotland]] recognises January 1 as the start of the year, instead of March 25.<ref>{{cite book|first=Robert|last=Lindsay|author-link=Robert Lindsay of Pitscottie|title=The Historie and Cronicles of Scotland: From the Slauchter of King James the First to the Ane Thousande Fyve Hundreith Thrie Scoir Fyftein Zeir|url=https://books.google.com/books?id=XK9HAAAAYAAJ|year=1899|publisher=Society}}</ref>