Why is the Russian calendar different from our usual calendar?

Russia also has its own traditional calendar, just like our lunar calendar, but now the Gregorian calendar is universal. These two calendars are not the only ones in the world.

The following is a brief introduction to the Russian calendar:

Russian calendar (pyccck ий ka π eh д APB) Ancient Russia adopted the "Genesis Year". At first, the chronicle of the calendar was recorded, and 5508 BC was designated as the first year of Genesis, and the New Year began on March 1. After AD 1492, from September 1. 1 699170015 Peter I ordered the adoption of the julian calendar (the old calendar) and changed the "Genesis Year" from 1 1 to1. Julian calendar has an average of 365.25 days per year, which is shorter than the regression time 1 1 min14s. This slight error causes the solar term date to be advanced by 128 1 day. 1582, Pope Gregory XIII implemented the calendar reform, and moved the date of vernal equinox from 1 1 in March of the old calendar to 10 days later. It is also stipulated that the new calendar can be used for leap except the century years of 400 years (such as 1600, 2000), and other century years (such as 1700, 1800, 1900) are not leap. In this way, the new calendar will be three days less than the old calendar every 400 years. Calendar reform has led to the gap between the old and new calendars in terms of dates. 18th century old calendar date is earlier than new calendar date 1 1 day,19th century early 12 days, 20th century early 13 days. 1918 65438+1On October 26th, the Soviet government announced that it would stop using the old calendar and adopt a new calendar (namely Gregorian calendar).