In China, summer begins in long summer, that is, from May 5 to 7 in Gregorian calendar, and ends in beginning of autumn, that is, from August 7 to 9 in Gregorian calendar; Westerners generally call summer solstice to autumn as summer. In the southern hemisphere, 1 February,1month and February are generally designated as summer. In the north temperate zone, the meteorological summer is from May 2 1 day to August 23; In the south temperate zone, the meteorological summer is Gregorian calendar 1 1 22nd of the month to February/9th of the following year.

In China, summer begins in long summer, that is, from May 5 to 7 in Gregorian calendar, and ends in beginning of autumn, that is, from August 7 to 9 in Gregorian calendar; Westerners generally call summer solstice to autumn as summer. In the southern hemisphere, 1 February,1month and February are generally designated as summer. In the north temperate zone, the meteorological summer is from May 2 1 day (Xiaoman) to August 23 (Summer) on the Gregorian calendar; In the south temperate zone, the meteorological summer is Gregorian calendar 1 1 22nd of the month (corresponding to the light snow in the northern hemisphere) to February19th of the following year (corresponding to the rain in the northern hemisphere). According to the characteristics of the earth's revolution, the summer duration in the north temperate zone is theoretically longer than that in the south temperate zone.