Example image of eyePlorer eyePlorer map for '1980': Gregorian calendar Leap year Leap year starting on Tuesday Roman numerals Crown prince January 1 Swedish Act of Succession Victoria, Crown Princess of Sweden European Commission January 4 Jimmy Carter Soviet Union Epoch (reference date) Global Positioning System January 6 Mafia Piersanti Mattarella Chrysler January 7 1979 Grand Mosque Seizure January 9 Mecca Saudi Arabia Chess January 11 Nigel Short January 20 Pasadena, California Pittsburgh Steelers Rose Bowl (stadium) St. Louis Rams Super Bowl Super Bowl XIV Gold Fixing January 21 Troy ounce United States dollar Brighton MS Athina B Sincelejo Andrei Sakharov January 22 Chicago, Rock Island and Pacific Railroad January 24 Egypt Israel January 26 Canadian caper Diplomacy