Why is there no 30 in February this year?

Each month contains two solar terms. The working people in ancient times called the first solar term (beginning of spring, Jing Zhe, Qingming, Long Summer, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Cold Dew, beginning of winter, Heavy Snow and Slight Cold) "solar term". The last solar term (rain, vernal equinox, Grain Rain, Xiaoman, Summer Solstice, Great Summer, Early Shu, Autumn Equinox, Early Frost, Light Snow, Winter Solstice and Great Cold) is called "Zhongqi". How to arrange the lunar leap month? In the history of our country, there have been different ways to deal with it. The leap month was placed at the end of the year in the Western Han Dynasty, and it was called "the last September" in the early Han Dynasty. After the Han Dynasty, the month without neutrality was designated as the leap month of the first lunar month, and this rule of placing leap has continued to this day.

Why is a lunar month not neutral? The results show that the average interval between two neutral gases is 365.2422÷ 12=30.4368 days, then 30 or 3 1 day. The earth's orbit around the sun is elliptical and moves slowly at the perihelion (vernal equinox and autumnal equinox), and the interval between the two solar terms can reach 3 1.45 days. On the other hand, the average lunar new moon is only 29.5306 days, including 29 days in the first lunar month and 30 days in the second lunar month. In this way, there will be such a situation: in some months (usually abortion), the last breath has passed at the beginning, and the next breath has not come at the end. For example, 200 1 (New Year's Eve) is May 21(April 29), and the first day of the next lunar month is May 23. But this lunar month ends on June 20th, and the summer solstice is June 2nd1,so this lunar month is not "neutral" and falls in April of the lunar calendar. This year's vernal equinox is on March 20th (February 30th), the first day of the next lunar month is on March 2nd1,and ends on April18th, and the third day is in Grain Rain on April 20th. In this way, the month after February of this year's lunar calendar without "neutral gas" is designated as leap February. According to this leap law, it will leap in July 2006, May 2009, April 20 12, September 20 14, June 20 17 and April 2020.

As for the lunar month, this involves the solar terms. There are 24 solar terms in a year, which is just a traditional saying. In detail, it should be said that there are twelve solar terms and twelve neutral terms in a year. Which of the twelve qi belongs to which month is regular: rain is the qi of the first month; The vernal equinox is in mid-February; Grain Rain is the spirit of March; Xiaoman is the spirit of April; The summer solstice is mid-air in May; The summer heat is in mid-June; Summer heat is the qi of July; The autumnal equinox is in mid-August; The first frost is the breath of September; Light snow is the neutral atmosphere in October; The winter solstice is 1 1 mid-month; It's freezing in mid-air in December.

As for which month the twelve solar terms are in, it is not necessarily so. A month in the lunar calendar averages a little more than 29 and a half days, but the average interval from one breath to the next is less than 30 and a half days. In this way, the monthly air in the lunar month will be delayed by 1 day. At a certain time, qi is not in the middle of the month but moved to the end of the month. If next month is a miscarriage, there will probably be no gas in this month, because the gas will be moved to the beginning of the third month. The middle month is not neutral, even if last month was a leap month. Take 1998 as an example: June 2 1 day in the solar calendar is May 27th of the lunar calendar, which is the summer solstice (mid-May); But July 23rd in the solar calendar is the first day of June in the lunar calendar, and this day is the summer heat (the qi of June). From June 24th to July 22nd of the Gregorian calendar (one month after the end of May of the lunar calendar), there is only one solar term, and this month is leap May. Therefore, leap month is determined by people according to certain laws, which is not mysterious.

In the China lunar calendar, a year with a leap month is called a leap year. The general year is 12 months, 354 or 355 days, and the leap year is 13 months, 383 or 384 days. As a kind of lunar calendar, the number of days in each month depends on the monthly loss, and the time of one year is based on 12 months. In order to close the earth's cycle around the sun, that is, the tropic year, one month is added every two to four years, and the added month is a leap month, so the leap year of the lunar calendar is 13 months.

There is no thirteenth month in the lunar calendar. According to the calendar rules, leap months are repeated from February to the same month after 10, and the repeated months are leap months. For example, the leap month after April is called leap April.

Calculation of leap month in lunar leap year, three-year leap, five-year leap, 19 leap; The lunar calendar basically takes 19 as a cycle, corresponding to the same time in the Gregorian calendar. For example, in the Gregorian calendar, May 27th, 2006, 5438+0, May 27th 1982 and May 27th 1963 are the fifth day of leap April.

The month of the leap month is inferred according to the laws of the lunar calendar, mainly according to the coincidence with the 24 solar terms of the lunar calendar;

The number of leap months in the lunar calendar is 29 or 30 days, just like normal months.

The so-called "leap" in the lunar calendar is just called leap year and leap month, and there are also leap years in the solar calendar.

Gregorian calendar 1982-2042 and lunar leap year leap month comparison table

The year of the leap month (the first day) in the Gregorian calendar month.

1May 23, 982, leap April, small non-year.

1984165438+1October 23rd, October of leap year.

1July 26, 987, leap June, big year.

1June 23, 990, leap in May, year of Dageng Wunian.

1April 22, 993 March of leap year.

1995 August 25th of leap year.

1June 24, 998 leap year may small wuyin year

200 1 leap April, Xinsi year.

March 2 1 day, 2004, was February of the Great Shen Jianian.

August 24, 2006, leap July, the year of Taepo B.

June 23, 2009, leap May, the year of great ugliness.

20 12 may 2 1 leap April, the year of Xiao renchen.

2014101October 24th, leap in September, Xiao Wu's good year.

2065438+July 23, 2007, leap June, Dading Unitary Year.

May 23, 2020, leap into April, the year of little boxer.

March 22, 2023, leap February, the year of the Great Guimao.

July 25, 2025, leap June, has been four years.

June 23, 2028, leap in May.

April 22, 20031year, leap into March, 1911.

August 25th, 2033, July of leap year.

July 23, 2036, leap June, Xiao nian.

The year of the leap month (the first day) in the Gregorian calendar month.

June 22, 2039, leap in May, has not yet reached the end of the year.

March 22, 2042, leap February, a big year.

Calculation method of leap year: Divide by 4 but not by 100 or divide by 400 is leap year.

120 solar calendar/trunk branch/five elements/zodiac comparison table

The first cycle begins, the first cycle ends, the second cycle begins and the second cycle ends.

1900 1 October 3 1 February 1 8 February 1960 1 October 28th 1 96/kloc-0

1901February19February1902 February 71961February/may February1962 February 4.

1902 February 8th190365438+1October 28th1February 5th, 962196365438+1October 24th.

1903 65438+1October 29th1904 February151963 65438+1October 25th1964 February/.

1904 February 16, 1905 February 3 1964 February 13, 1965 February 1, Chen Jialong.

1905 February 4th 1906 1.24 1965 February 2nd 1966 1.20 B-4 wooden snake.

190665438+1October 25th1907Feb12196610/February 8th 00.

1907 February131908 February1967 February 91968 65438+1October 29, Yang Huo, Ding Wei.

1February 2, 908 1909 65438+1October 2 1 year 1968 65438+1October 30 1969

190965438+1October 22nd 65438+February 9th 0065438+February 27th 096965438+February 5th 0970 Ji You native chicken.

191February1911October 29th1February 6th, 9701971/.

19 1 1 year 1 9 1 February 21June 71year/kloc.

19 12 February 19 13 February 5th 1972 February 15 February 1973.

February 6th 19 1965438,1October 25th 03+09 14 15.438, February 3rd 0973 65438,1October 22nd.

1914 65438+261October1915 February13 February1974 65438+23/kloc-0

19 15 February 19 16 February 1975 February1June 1976 June 65438+/kloc.

19 1965438 February 3rd 06+0917197610/7 Chen Bing Fire Dragon.

1917 65438+123 October19 February 10 February 1977 February 18 February/.

19 18 February 1/kloc-0 June19 June/kloc-0 October/kloc-0 February 7 June 1978.

1919 February1June1920 February 196/979 June 65438+1October 28th June/kloc-0.

1920 February 20th 192 1 February 7th 1980 February 16 June 198 1 February 4th.

1921February 8th 1922,1October 27th1February 5th 1982,1/kloc-

1922 65438+1October 28th1923 February15+0982 65438+1October 25th1983 February/kloc-0.

1 923 February 16,1924 February 41983 February1984 February1,Guihai pig.

1924 February 5th1925 65438+1October 24th1984 February 2nd1985 February19.

1925 65438+1October 25th1February 9261February1February 20th, 9851February 8th, 986.

1926, February 13, 1927, February 1986, February 91987,65438+1October 28.

1927 February 2nd1928 65438+1October 22nd1987 65438+1October 29th1988 February 16.

192865438+1October 23rd 65438+February 9th 092965438+February 7th 098865438+February 5th 0989 Chen Wu Dragon Map.

1929, February 10, 1930, 65438+1October 29, 1989, February 6,1990,65438.

193065438+1October 30th1931February16199065438+1October 27th/kloc-.

1931February17 February1932 February 51991February/may February1February 3, 992 Wei Xinyang

1932 February 6th193365438+1October 25th1February 4th, 992199365438+1October 22nd Renshen water monkey.

1933 65438+1October 26th1934 February131993 65438+1October 23rd1February 9th, 994.

1934, February 14, 1935, February 3 1994, February 1995, June 30, 2008.

1935 February 4th1936 65438+1October 23rd1995 65438+1October 30th1996 February 18.

1936 65438+1October 24th1937 February1February1February 9961February 997.

1937 February11June1October 30/June kloc-0/February 7, 997/June 65438+/kloc.

1938 65438+1October 3 1 day1939 February181June 998 65438+1October 28 June/kloc.

1939 February19February1940 February 71999 February16 Tu Tu on February 4, 2000.

1940 February 8th1941February 26th, 2000/February 5th, 200611October 23rd, Chen Geng Jinlong.

194 1 year 65438+1October 27th1February 94214th 2006 5438+0 years 65438+20021October 24th.

1942, February 15, February 4, 0943, February 2003 12, June 65438+1October 3 1, Renwu water horse racing.

1943 February 5th 1944 65438+20031October 24th February 20041June 65438+1October 2nd1.

1944 65438+1October 25th1945 February 2004 12 65438+20051October 22nd after Shen Jiamu.

1945 February131946 February1February 8, 2005 5438+20061October 28, Yoyo Muji

1946, February 2, 2006 1947, 1, 65438+20071October 29, February 2007 17, Ice Bay Firedog.

1947 65438+1October 22nd 65438+February 9th 0948 February 65438+August 6th, 2008 Dinghai Huozhu

1948, February 10, 1949, 65438+1October 28, February 7, 2008, 2009, 65438+20091October.

1949 65438+February 29, 2005 65438+June 2009 65438+20061October 26 5438+February 23, 2000 ugly cow

1950 February17 February19515 February 2010 February 24 February 2010/2 February Gengyin Jinhu

1951February 619521October 2 6, 201February 3, 20 12/kloc-0.

1952 65438+1October 27th1953 February13201265438+1October 23rd 2065438+February 9th, 2003.

1953 February14 February1954 February 2013 February10 February 20/4 June 65438+ 10 October 30.

1954 February 3rd1955 65438+1October 23rd 20th14 65438+1October 30th 20th/May February 18.

1955 65438+1October 24th1956 February1201may February19201June February 7th

1956, Feb. 12, 1957, 65438+1Oct. 30, 2065438+Feb. 8, 20 17.

1957 65438+1October 3 1 day1958 February17201765438+1October 28th 20/kloc.

1958 Feb.18Feb.1959 Feb. 7, 2018Feb.16 Feb. 20 19 1898 Feb. 4.

1February 8, 959, 65438+20651October 27, 438+February 5, 2009, 65438+20201October 24, Jihai local pig