The following pages, corresponding to the Gregorian calendar, list the historical events, births, deaths, and holidays and observances of the specified day of the year:
Footnotes
- ↑ February 29 only occurs every four years on leap years. This day is added to the calendar as a corrective measure because the Earth does not orbit the Sun in precisely 365 days.
 
See also
External links
Wikimedia Commons has media related to January 15.
- On This Day
 - BBC: On This Day
 - The New York Times: On This Day
 - Library of Congress: Today in History
 - History Channel (US): This Day in History
 - History Channel (UK): This Day in History
 - New Zealand Government: Today in New Zealand History
 - Computer History Museum: This Day in History
 - Internet Movie Database: This Day in Movie History
 
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