What is the second solstice?

The second solstice is the vernal equinox, autumnal equinox, summer solstice and winter solstice, which is a solar term reflecting the annual movement of the direct point of the sun.

On March 2 1 every year, when the sun directly hits the equator and moves towards the tropic of cancer, it is the vernal equinox; Around September 23 every year, when the sun shines directly on the equator and moves to the tropic of Capricorn, it is the autumnal equinox; June 2 1 every year is the summer solstice when the sun shines directly on the Tropic of Cancer. Every year around 65438+February 2 1, when the sun reaches the tropic of Capricorn, it is the winter solstice.

Related information:

Among the 24 solar terms, there are two solar terms with the word "fen", the vernal equinox and the autumnal equinox. The vernal equinox divides spring equally, the autumnal equinox divides autumn equally, and the length of day and night is equal. Astronomically, the sun reaches 0 at the vernal equinox and 180 at the autumnal equinox, and the phenomenon of equal length of day and night can be seen at the vernal equinox and autumnal equinox. After the autumnal equinox, the days are getting shorter and shorter in the northern hemisphere, and the nights are getting longer and longer in the southern hemisphere.

From the winter solstice, the day becomes longer and longer, but from the vernal equinox, the day is longer than the night, from the summer solstice, the day becomes shorter and shorter, but from the autumnal equinox, the day is shorter than the night.