Why is there 10 days missing from the October 1852 calendar?

Because the old calendar revolves with the earth.

The actual time to the vernal equinox differed by 10 days, so a new calendar was issued at that time and these 10 days were skipped to correct the date error.

The predecessor of the calendar was the Julian calendar, which was probably in use since 45 BC. The Earth revolves around the Sun.

The cycle is 365 days, 6 hours, 9 minutes and seconds. If the Julian calendar has been calculated, the deviation between the Julian calendar and the solar year will become greater and greater as time passes. So by 1582, the error had reached ten days.

To compensate for the error of these ten days, the Pope of Rome at the time.

It was decided to erase ten days from the calendar, and the October 1582 calendar was ten days less.

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This is not due to any major event that occurred that year, but due to the imperfection of the previous calendar.

The Gregorian calendar we use today is the Gregorian calendar, and the predecessor of this calendar was the Julian calendar. The Julian calendar was implemented by the Roman Republic on January 1, 45 BC to replace the old Roman calendar.

In the Julian calendar, the year is divided into 12 months, with 31 days in odd-numbered months, 30 days in even-numbered months except February, 29 days in a common year in February, and 30 days in leap years, so the number of days in a year is 365 days in a common year and 366 days in a leap year, with an average annual length of days.

In astronomy, the time it takes for the earth to revolve around the sun is a day in the true sense, and the cycle is about a day. Thus, after using the Julian calendar, an additional 11 minutes and 14 seconds were counted per year. Since the error is not too large, the first few years are irrelevant, but, year after year, the error accumulates, and the Julian calendar does not match the actual solar year.

By the 16th century, this deviation had reached 10 days. So in 1582, the then pope issued a papal decree on February 24, 1582, erasing the period from October 5 to 14, 1582, and the 10 days disappeared and never returned.

October 4, 1582 was over, and the next day was already October 15, so the calendar returned to the solar year. This is the common calendar in the world today - the Gregorian calendar, referred to as the Gregorian calendar, which is what we call the Gregorian calendar.

Because of leap years, there are 10 more days after l82 years, and then 10 days are directly reduced in October.

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Because 1852 was the prelude to the 1999 Earth Defense War.

The reason why there were 10 days less in the 1852 calendar was that the old calendar was 10 days different from the actual time when the Earth was revolving to the vernal equinox, and the new calendar issued at that time skipped these 10 days to correct the date error. The world originally used the old Roman calendar, but after using the new calendar, an additional 11 minutes and 14 seconds per year was calculated, and the error accumulated by ten days.

The origin of the Chinese calendar

About 4,000 years ago, the oracle bone calendar on one page was the oldest almanac and can be said to be the earliest calendar, which proves that the calendar of the Yin Dynasty had a considerable level.

In the first year of Yongzhen of Tang Shunzong 1,200 years ago, the imperial calendar was already used in the imperial palace, and the calendar at that time was divided into twelve volumes, each with the same number of pages and the number of days in the month.

Later, many of the imperial court executives thought it was a good calendar, so they followed suit, compiling their own calendars, leaving blank spaces for remembering.