When are the vernal equinox, summer solstice, autumn equinox and winter solstice in Beijing?

Beijing is 39 55 ′ 48 ″ north latitude and116 24 ′ 0 ″ east longitude. The sunrise and sunset times of vernal equinox, summer solstice and autumn solstice are as follows:

1, winter solstice:

Sunrise at 07:30 and sunset at 16: 30.

2. Summer solstice:

Sunrise at 4:30 and sunset at 19:30?

3. Equinox and Autumn Equinox:

Sunrise at 6: 00 and sunset at 18: 00.

The main factors affecting sunrise and sunset are time zone, latitude and altitude.

1, time zone (longitude):

Because different places in the world use different times, people living in different longitudes first see the sunrise and sunset, and then. In addition, changing daylight saving time and winter time will also affect the time when people see sunrise and sunset.

2. Latitude:

Not counting the equator, the days in the northern hemisphere are long and the nights are short (direct sunlight) in summer. Except for the North Pole (extreme day), the higher the latitude, the earlier the sunrise and the later the sunset; At the same time, the southern hemisphere is in winter, with short days and long nights. Except the Antarctic (polar night), the higher the latitude, the later the sunrise and the earlier the sunset.

In addition, the inclination angle between the earth's rotation axis and the revolution horizontal plane is about 67 degrees, so the sunshine time is different in different regions, which is also a factor affecting the time of watching sunrise and sunset.

3. Height (altitude):

Height is also an important factor affecting the time of watching sunrise and sunset. Generally speaking, the higher the altitude, the earlier the sunrise and the later the sunset.