A Brief Introduction of Solar Terms
1 min readSolar Terms is a calendar of twenty-four periods and climate to govern agricultural arrangements in ancient China and functions even now.As we have mentioned the Chinese calendar is a lunisolar calendar，it takes into account the longest and the shortest days and the two days each year when the length of the day equals that of the night.In other words，the significant days are the Summer and Winter Solstices and the Spring and Autumn Equinoxes.
What Are“Jie Qi”and“Zhong Qi”
These twenty-four solar terms each suggests the position of the sun every time when it travels 15 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，so we find that during the first half of a year”Jie Qi”is around the 6th day of a solar month，“Zhong Qi” around the 2lst；in the second half of a year，”Jie Qi”is around the 8th and“Zhong Qi”around the 23rd.
