September 2 is the 245th day of the year (246th in leap years). There are 120 days remaining.
- 1666 - Start of the Great Fire of London
- 1752 - Britain adopts the Gregorian Calendar, nearly two centuries later than most of Europe. To adjust for the accumulated discrepancies in the calendar, in Britain September 2 1752 is followed by Sptember 14. Supposedly, there was some popular resentment at this theft of eleven days.