What day is the autumn equinox in 2021?
The autumnal equinox time in 2021 is at 3:20:55 on September 23, 2021 in the Gregorian calendar, which is the 17th day of the eighth month of the lunar calendar, Thursday.After the arrival of the autumnal equinox, the daytime in the northern hemisphere gradually shortens, the temperature gradually drops, and the temperature difference between day and night is obvious.
Introduction to the Autumnal Equinox
"The Collection of the Seventy-two Hours of the Moon Order" says:"In the middle of August...interpretation of the Spring Equinox".It is said in "Spring and Autumn Fenlu:Yin and Yang In and Out Chapters":"The autumnal equinox is equal to yin and yang, so day and night are equal, and cold and summer are equal." "Autumn Equinox".From the autumn equinox, the climate has three main characteristics:the position of direct sunlight continues to move from the equator to the southern hemisphere, the phenomenon of short days and long nights in the northern hemisphere will become more and more obvious, the days will gradually become shorter, and the nights will become longer (until the winter solstice reaches the The night is the longest and the day is the shortest); the temperature difference between day and night gradually increases; the temperature drops day by day, getting colder day by day, and gradually entering the late autumn season.In the southern hemisphere, the opposite is true.
The time of the autumnal equinox in 2021
The autumnal equinox is the fourth solar term in autumn and the 16th solar term in the twenty-four solar terms.Every September 23 or 24, when the sun reaches 180 degrees of ecliptic longitude, it is the autumnal equinox.The sun directly hits the earth’s equator, and day and night are equally divided, each 12 hours.The global phenomenon of polar day and polar night.After the autumnal equinox, the direct sunlight point continues to move southward, so the autumnal equinox is also called the descending equinox.Since then, the temperature difference between day and night will gradually increase, the amplitude will be higher than 10 ℃.Therefore, the time of the 2021 autumnal equinox is at 3:20:55 a.m.on September 23, which is August 17, 2021 in the lunar calendar.
Schedule of the autumnal equinox over the years
2020 autumnal equinox time:September 22, 21:30:32, the fifth day of August (primary) in the lunar calendar 2020
2021 Autumn Equinox Time:September 23, 03:20:55, August 2021 (Small) Seventeenth in the Lunar Calendar
2022 Autumn Equinox Time:September 23, 09:03:31, Lunar Calendar August 28, 2022
2023 Autumn Equinox Time:September 23, 14:49:46 Time:September 22, 20:43:27, August 2024 in the lunar calendar (big) 20
Autumn equinox in 2025:September 23, 02:19:04, August 2025 in the lunar calendar (Small) First Day
2026 Autumn Equinox Time:September 23, 08:04:56 14:01:23 on September 23, the 23rd of August (small) in 2027 of the lunar calendar
Autumn Equinox in 2028 Time:19:44:59 on September 22, the beginning of August (small) in 2028 in the lunar calendar 4
2029 Autumn Equinox Time:September 23, 01:38:09:26:30, the 26th day of August (small) in 2030 of the lunar calendar
2031 autumnal equinox time:September 23rd at 13:14:54, the seventh day of the eighth month of the 2031 lunar calendar (small)
2032 Autumn Equinox Time:September 22 19:10:27, August 2032 (Small) Eighteenth of the Lunar Calendar
2033 Autumn Equinox Time:September 23 00:51:12 , September 2033 (big) first day of the lunar calendar
2034 autumnal equinox time:September 23, 06:39:04, August 2034 (small) eleventh day of the lunar calendar
2035 Autumn Equinox Time:September 23, 12:38:26 August (big) fifth day
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