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农历每年有廿四节气,农历每月有两个节气.“上半年来六廿一,下半年来八廿三”,这是以阳历来推算节气的日期.7月份以前,每月两个节气的日期,多在 阳历6日或21日,下半年每月的两个节气多在阳历的8日或23日.有时也相差一两天.所以口诀中又有“每月两节日期定,最多相差一两天”一句$ s, p- b0 {6 T
These twenty-four solar terms each suggest the position of the sun every time it travels15 degrees on the ecliptic longitude. In each month there are often two solar terms; the first one is generally named 'Jie Qi' and the other one 'Zhong Qi'. Their dates are mirrored by the Gregorian calendar, during the first half of a year 'Jie Qi' is around the 6th day of a solar month, 'Zhong Qi' around the 21st; in the second half of a year, 'Jie Qi' is around the 8th and 'Zhong Qi' around the 23rd.