2. The date of the lunar calendar is: March 24th, the year of Xin Chou.

Long summer, the seventh of the 24 solar terms, is celebrated on May 5-6 of the Gregorian calendar every year, when the bucket handle of the Big Dipper points to the southeast and the longitude of the sun reaches 45. "Summer" in long summer means "big", and "long summer" means that plants sown in spring have grown upright at this time.

4. Climatic characteristics of long summer: After the long summer solar term, the sunshine increased, the temperature gradually increased, the thunderstorm increased, and the crops entered a vigorous growth stage. "Long summer" is just a preview of the coming summer, and it doesn't mean "entering summer". Meteorology has strict standards for entering summer. If the daily average temperature in a place is stable above 22℃, long summer can be determined.

5. On the day of long summer, the average temperature in most parts of the country is 18 ~ 20℃, which is still spring, and generally only Hainan, Guangdong, Guangxi and Yunnan enter summer. Central Heilongjiang did not enter summer until the end of June.