When is February again Why should February be run

The fourth month of the 2012 lunar calendar is May 21, 2012 - June 10, 2012.

Leap February is caused by the fact that the cycle of the Sun and Moon relative to the Earth is not the number of full days.

The appearance of leap February is blind celebration, because in the month after the second month of the lunar calendar, there is only the solar term "Qingming", and the mid-air "Gu Yu" after "Qingming" falls to the next month, so that there is a month without mid-air after February. Therefore, the month after February, which has no neutral air, is named "leap February" according to the name of February.

Leap February Introduction:

There are two Februarys in a lunar year, and the second February is a leap February. This is done to reconcile the return year with the lunar year. There are two calendars prevailing in most parts of China: one is the Gregorian calendar; The other is the lunar calendar, also known as the "summer calendar".

The solar calendar, also known as the solar calendar, is based on the return year. Since the length of the return year is equal to the average solar day (i.e. 365 days, 5 hours, 48 minutes and 46 seconds), it is not a whole number of days. Therefore, the solar calendar takes 365 days as the usual year, that is, the "common year".

In order to clear the gap between it and the actual return year, the Gregorian calendar uses the method of "intercalation" to add 97 days in 400 years; Or every four years, a day is added in February, which is the "leap year" of the solar calendar and the "leap February" of the solar calendar. <

The frequency of leap February is second only to leap March, and it occurs moderately around the 21st century, generally occurring once every 19 years (such as 2004 and 2023). Since then, the frequency of leap February has gradually decreased, and it has become a rare leap month.

Leap February list.

16th century: 1583 (癸未年).

17th century: 1613 (癸chou year (壬申年 (庚戌年) 18th century: 1765 (Yi You year (Yi Mao year) 19th century:

1803 (癸海年 (甲戌年 (庚寅年) 20th century: 1909 ( 癸酉年 ( 丁巳年 (戊辰年 (丁海年) 21st century: 2004 (甲申年 (癸卯年 (壬戌年 (已未年) 22nd century:

2137 (Ding You Year (Bingxu Year) 23rd Century: 2281 (Xin You Year (Gengchen Year) 24th Century: 2376 (Bingshen Year (Yimao Year) 25th Century:

2414 (Jiaxu year).

26th century: 2509 (Ji You).

27th century: 2653 (癸酉年).

28th century: 2748 (Wushen year).

31st century: 3006 (Bingyin year (Yiyou year) 32nd century: 3101 years (Xin Chou year (Gengshen year) 33rd century: 3283 years (癸卯 year).

34th century: 3378 (Wuyin year (Ding You year) 35th century: 3492 (Renshen year).

39th century: 3845 (Yichou year (Jiashen year) 45th century: 4475 years (Yiwei year)

46th century: 4570 (Gengwu year).

The leap years of the Gregorian calendar coincide with the second month of the lunar leap month (20th century AD and 39th century AD) are: 1928 (Wuchen year (Jiashen year (C1 Shen year) Zheng Zai Nian, 2748 years (戊申年 (庚申年 (壬申年 (甲申年 (甲申年).

The second month of the lunar calendar, also known as leap February, was established to supplement the error between the solar calendar and the lunar calendar. The time of the last run in February depends on the lunar calendar used. If the auction starts according to the traditional Chinese lunar calendar, then the last time it was in February 2022 was in leap February.

If you follow the lunisolar calendar, the last time you ran February was in 2015 in leap February.