Solar terms
The solar terms are the twenty-fourth season and the climate, which is a supplemental calendar (ancient) that was made in ancient China to guide the farming. East Asian traditional summer calendar (lunar calendar) is a "yin and yang calendar", respectively, according to the day and month to run the development: the moon part is based on the moon as the benchmark to determine the age is the return year (solar year) as the benchmark. The sun is about 365.2422 days per year, twenty-four solar terms accordingly, of which: ▪ summer solstice equivalent to the sun arrived at 90 ° when the yellow began (the sun is almost direct to the Tropic of Cancer, the northern hemisphere day longest). ▪ The autumnal equinox is equal to 180 ° (autumn point). ▪ The winter solstice is equivalent to the beginning of the sun reaching 270 ° (the sun is almost straight to the Tropic of Cancer, the shortest day in the northern hemisphere). ▪ The vernal equinox is equal to 0 ° (vernal equinox). ▪ Ching Ming is the time when the sun reaches 15 °. In the human culture, the year (return year) divides twenty-four solar terms, and the modern calendar divides the day (flat sun day) into twenty-four hours of time units, both of which are similar in the data (24) The comparison. In addition to the solar operating cycle, it is also used to determine the standard of the leap month. ...