Why are Days Missing from September 1752 Calendar?

The Julian Calendar (introduced by Julius Caesar in 46 BC) calculated a year as exactly 365.25 days (adding one leap day every 4 years).

However, a true solar year is actually 365.2422 days — slightly shorter. This tiny difference of 11 minutes per year accumulated over centuries into a massive error of about 11 days by the 1700s.

The calendar dates no longer matched the actual astronomical seasons — the spring equinox (meant to be March 21) was occurring on March 10.

In 1582, Pope Gregory XIII introduced the Gregorian Calendar (the one we use today) to fix this error. Catholic countries switched immediately.

But Protestant Britain refused to adopt the 'Papal' calendar for nearly 170 years — until the Calendar (New Style) Act of 1750 finally forced the switch.

The Solution: Britain simply deleted 11 days. After Wednesday, September 2, 1752, the next day was declared Thursday, September 14, 1752. Eleven days vanished overnight.

Ordinary people were furious. Landlords still demanded full monthly rent. Workers lost wages. People rioted in the streets shouting 'Give us our 11 days!' — one of history's most unusual protests.