What are the four seasons in America?

The division of seasons is only related to latitude. The United States is between 30 and 50 degrees north latitude, so the division of seasons in the United States is slightly longer than that in China.

Spring: March 2 1-June 21.

Summer: June 22nd-September 22nd.

Autumn: September 23rd-65438+February 2nd1.

Winter: 65438+February 22nd-March 20th.

The four seasons on the earth are first manifested as an astronomical phenomenon, which is not only the periodic change of temperature, but also the periodic change of the length of day and night and the height of the sun. Of course, the change of the length of day and night and the height of the sun at noon determines the change of temperature. The gradual changes of the four seasons are not uniform all over the world. It is summer in the northern hemisphere and winter in the southern hemisphere. The northern hemisphere changes from warm to cold, and the southern hemisphere changes from cold to hot. The length of day and night and the height of the sun change periodically in different seasons.

The United States spans six time zones from the West Fifth District to the West Tenth District. Each time zone corresponds to a standard time. From east to west, it is Eastern Time (est, the fifth district in the west, including 19 states near the Atlantic coast and mainland, and Washington, D.C., the representative city is Washington), Central Time (CST, the sixth district in the west, including Chicago and New Orleans), Mountain Time (MST, the seventh district in the west) and Pacific Time (PST, the eighth district in the west, including the Pacific Ocean). According to the law of "early in the east and late in the west", each hour will be reduced. The so-called western time refers to Pacific time.

The United States implements daylight saving time, which is called "daylight saving time". It starts on the first Sunday in April and ends on the last Sunday in June every year 10.

References:

Baidu encyclopedia four seasons