11 Days that Never Were
September 3, 1752 – Today was the day that never happened…at least not in Britain. That’s because this was the day that the British made the jump from the Julian calendar to the Gregorian calendar.
The reason for the change was that the Julian calender (introduced by Julius Caesar) was like a bad wristwatch. It assumed that a year was 365.25 days long. In order to stay on track a leap year was thrown in every 4 years with 366 days. The only problem was – a real trip around the sun takes 365.2422 days. This minor difference gets magnified over a few centuries and after a while you start to see the months getting out of sync with the actual seasons.
The Gregorian calendar offered a more accurate solution that fine-tuned the occurrence of leap years. The correction required that century years (like 1800, 1900, 2000, etc) could only be leap years if they were divisible by 400 (instead of 4). That means the years 1600 and 2000 were leap years, but 1700, 1800 and 1900 were not.
In order to make the transition to this new math, Londoners in 1752 would have to skip September 3rd through the 13th and go straight to the 14th. So according to the historical record, for those eleven lost days nobody was born and nobody died.


