Calendar Adjustment Day
Calendar Adjustment Day is held on September 2. This event in the first decade of the month September is annual. 
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Calendar Adjustment Day on September 2 is commemorates the date in history when New Year's Day was shifted to the first of January, and the entire calendar system changed.
After the British Calendar Act of 1751, the Gregorian Calendar was adopted by Britain in 1752. But shifting and aligning with the new calendar was not that simple — it required omitting 11 days for synchronization with the proposed Gregorian Calendar. The residents of Britain and the American colonies went to sleep at night on September 2, 1752, and woke up the next day on September 14, 1752. This change also led to New Year’s Day being celebrated on January 1. Those 11 days are lost forever in time.
Similar holidays and events, festivals and interesting facts
Emma M Nutt Day on September 1 (in September of 1878 Emma M Nutt became the first female phone operator, and from that point forward it’s been a woman’s work);
World Letter Writing Day on September 1
World Fingerprint Day on September 1
Another Look Unlimited Day on September 2 (is celebrated the day after Labor Day);
Skyscraper Day on September 3 (The very first skyscraper was built in 1885 in Chicago. It was The Home Insurance Building and had 10 floors. The author of the project is the American architect William Le Baron Jenney. It lasted until 1931);
Bed Day in Japan on September 3
Be Late For Something Day on September 5
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