What is the solar term tomorrow?

Solar terms can be understood as two meanings: one is one of the twenty-four qi. Since the slight cold, every 30-degree increase in the solar meridian is another solar term. There are slight cold, beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter and Daxue. It's called twelve solar terms. Second, the floorboard of the twenty-four qi. Solar terms are generally calculated according to the solar calendar. The earth revolves around the sun at 5: 48: 46 every 365 days and rotates once every 24 hours. Because the orbital plane of the earth's rotation is not the same as the equatorial plane, but maintains a certain inclination angle, the position of the direct sunlight on the earth is different all the year round. In the northern hemisphere, when the sun is directly at 23.5 degrees north latitude, it is called summer solstice in astronomy; When the sun shines directly at 23.5 degrees south latitude, it is called the winter solstice; The solstice in summer and the solstice in winter mean that it is halfway between summer and winter. Twice a year, when the sun shines directly on the equator, it is the vernal equinox and the autumnal equinox, in the middle of spring and autumn. The day is as long as the night. The solar terms reflecting the changes of the four seasons are: beginning of spring, Spring Equinox, Long Summer, Summer Solstice, beginning of autumn, Autumn Equinox, beginning of winter and Winter Solstice. Among them, beginning of spring, Changsha, beginning of autumn and beginning of winter are called "Li Si", which means the beginning of the four seasons. There are five solar terms reflecting temperature changes: slight summer heat, great summer heat, summer heat, slight cold and severe cold. There are seven solar terms reflecting weather phenomena: rain, Grain Rain, white dew, cold dew, first frost, light snow and heavy snow. There are four solar terms reflecting phenological phenomena: Jing Zhe, Qing Ming, Xiaoman and Mang Zi. According to the position of the sun on the ecliptic, modern people accurately determine the specific time of the twenty-four solar terms: the sun in beginning of spring is located at 365,438+05 degrees in the spring meridian, the rain sun is located at 330 degrees on February 2-5, the thunder sun is located at 345 degrees on June 65,438+08-20, and the sun is located at 0 degrees on March 5-7 at the vernal equinox. On March 20-22, the Qingming sun is located at 15 degrees, on April 4-6, the Grain Rain sun is located at 30 degrees, on April 19-2 1, the long summer sun is located at 45 degrees, and on May 5-7, the Xiaoman sun is located at 60 degrees, 5. On June 5-7, the summer solstice sun is located at longitude 90 degrees, June 2 1-22, summer sun at longitude 105 degrees, July 6-8, summer sun at longitude 120 degrees, and July 22-24, beginning of autumn autumn sun at longitude/kloc. On August 7-9, summer sun is at longitude 150, August 22-24, dew sun is at longitude 165, September 7-9, autumnal equinox sun is at longitude 180, September 22-24, and dew sun is at longitude/kloc-0. The first frost sun is at 2 10 degrees on1October 8-9, the beginning of winter sun is at 225 degrees on1October 23-24, and the Xiaoxue sun is at 240 degrees1October 7-8. 65438+February 6-8, winter solstice sun at meridian 270 degrees, 65438+February 2 1-23, slight cold sun at meridian 285 degrees, 65438+1October 5-7, great cold sun at meridian 300 degrees, 65438+. The C value of beginning of spring in this century is 4.475, and the date of beginning of spring in 20 17 is as follows: [2017× 0.2422+4.475]-[2017/4-15] = 492-489.