January 15th is the fifteenth day in the Gregorian calendar. On this day, Wikipedia went online, Gaddafi was proclaimed premier of Libya, the Pentagon was dedicated in Arlington, Virginia, and James Naismith published the rules to the game of basketball. Famous birthdays include Drew Brees and Martin Luther King, Jr., and Edward Teller. January 15th also marks Martin Luther King, Jr. Day and National Hat Day.

We have 3 holidays listed for January 15.