What happened in October 1582 what happened in October 1582

1. This story began in 45 BC. Julius Caesar of Rome adopted the advice of Sotcheney of Alexandria, an Egyptian mathematician and astronomer, and began to use "julian calendar", while "julian calendar" stipulated that a year was divided into 12 months, and 31 days in a month were big months. February 3th is abortion day. Only February is special, with an average of 29 days in a year and 3 days in a leap year. So the average length is 365.25 days per year. Julian calendar was recognized and popularized as soon as it came out. As a result, as soon as Julius Caesar's successor Augustus came to power, he immediately revised the "julian calendar". Because he was born in August, he must turn August into a big month. What about an extra day? Augustus robbed a day directly from February and allocated it to August. Since then, August has become 31 days, September, October, November and December. It also changed the singles and doubles. No way, the ruler has said that everyone can only do this, so time passed slowly. Suddenly, in 1582, "julian calendar" faced a great crisis. As mentioned above, julian calendar calculated that the average length of a year was 365.25 days, but in fact, the returned year was 365.2422 days. Therefore, "julian calendar" will be .78 days longer than the tropic year, that is, 11 minutes and 14 seconds. Although 11 minutes and 14 seconds are rare, the error is generally small, for example, it increases by 3.12 days every 4 years.

2. By 1582, the error of 11 minutes and 14 seconds had accumulated to 1 days. The extra 1 days prevented Rome from celebrating Easter on time. Easter is the main festival in Rome this year, and no mistakes are allowed. Angry Pope grigori made a simple and rude decision to delete the extra 1 days directly. October 4, 1582 passed like this, and tomorrow is October 15. The Romans agreed happily.

3. As soon as this decision was made, other Europeans immediately jumped out to oppose it. Why do you Romans "erase" everyone's 1 days because you want to celebrate Easter? Among them, Britain was the first to stand up against it. As a result, in 1752, the "extra" days on the calendar changed from 1 days to 11 days, which began to affect people's normal life. At that time, the British finally figured it out, immediately convened a parliament and decided to "erase" 11 days at a time, that is, September 3, 1752, and jumped directly to September 13.