Why is 10 missing 1582 days?

1582 October lost 10 days because of the imperfection of the previous calendar.

1582, the julian calendar vernal equinox (2 1 year in March) differs from the actual time of the earth's revolution to the vernal equinox by 10 day. Therefore, when the Gregorian calendar was implemented, 1582, the day after 10, julian calendar was designated as Friday, 1582, 15, that is, 10 days were deleted, but the original cycle of the week remained unchanged.

Some countries, such as France, choose to delete1582 65438+the day after Sunday on February 9 is Gregorian calendar1582 65438+Monday on February 20, and also delete 10 days, but the cycle of the original week remains unchanged.

Extended data

Although the Gregorian calendar reform is based on religious reasons, the main contribution of the reform is to provide an accurate and reliable official and folk calendar system for civilized society.

Although the Gregorian calendar reform was formulated as early as 1582, it took several hundred years to be gradually adopted by various countries-it was formally adopted by Germany in 1700, while Russia did not change from julian calendar to Gregorian calendar until 19 18 after the Red Revolution.

It was not until 1 1 century and14th century that the concept of western yuan became popular. It was also the result of European colonization that AD became the mainstream of the world, and it also spread the Gregorian calendar and became an internationally recognized standard of chronology.

Baidu Encyclopedia-1582