What are the twenty-four solar terms of the lunar calendar revised during the Midi period?

It will rain in Meng Chun in the first month.

The vernal equinox (March 20th -2 1) is mid-spring in February.

Grain Rain (April 19-20) Ji Chun in March.

Xiaoman (May 20-22) visited Xia Meng in April.

Summer solstice (June 265438 +0-22) May afternoon and midsummer

The summer heat (July 22nd-23rd) ended in the last month of summer in June.

Summer (August 22 -24) Shen July

Autumn Equinox (September 22nd-24th) Mid-Autumn Festival in August.

The first frost (65438+1October 23-24) falls in September.

Xiaoxue (165438+1October 22-23)1October Haimeng East

The winter solstice (65438+February 2 1-23) 1 1 month is the mid-winter and winter month.

Great cold (65438+1October 19-2 1) is ugly in December, winter and twelfth month.

According to the records of Emperor Wu of the Han Dynasty, taichu calendar was promulgated in May of the first year of Dachu: summer and May, which was the official calendar, with the first month as the beginning of the year, the color was yellow, the number was five, the official name was harmonious.

Taichu calendar stipulates that a year is equal to 365.2502 days and January is equal to 29.5086 days. Replace the previous "subtraction" with "addition" to adjust the time difference. Change October as the beginning of the year to the first month of the year; Beginning to adopt twenty-four solar terms that are beneficial to agricultural time; Take the month without neutral gas as leap month to adjust the contradiction between the sun and the lunar calendar. This is an epoch-making progress in the history of China. Taichu calendar method also drew a solar eclipse cycle of 135 months based on astronomical observations and years of records by historians. After it came out, a * * line was used for 188 years.