2. Solar terms, months and days of the earth's movement, the direct latitude of the sun, and .....

From winter to the sun, the tropic of Capricorn (23.5 s) 65438+February 22nd or 23rd, the days in the northern hemisphere are short and the nights are long, while the perihelion in the southern hemisphere is relatively long.

Vernal equinox points directly at the equator (0) March 2 1 or March 22, and the world is divided equally between day and night.

The summer solstice points to the Tropic of Cancer (23.5 degrees north latitude). On June 22 or 23, the days in the northern hemisphere are long and the nights are short, and the relative apohelion in the southern hemisphere is short.

The autumnal equinox points directly to the equator (0). On September 22nd or 23rd, the world will be divided equally between day and night.