dōng zhì
冬 至
the Winter Solstice
冬至是“二十四节气”之第22个节气，在每年公历12月21-23日交节。冬至是太阳直射点南行的极致，冬至这天太阳光直射南回归线，太阳光对北半球最为倾斜，太阳高度角最小，是北半球各地白昼最短、黑夜最长的一天。
The winter solstice is the 22nd solar term of the "24 solar terms", which is held on December 21-23 of the Gregorian calendar every year. The winter solstice is the extreme of the sun's direct southward rays, the day of the winter solstice, the sun's rays are directly on the Tropic of Capricorn, the sun's rays are the most inclined to the northern hemisphere, the sun's altitude angle is the smallest, and it is the shortest day and the longest night in the northern hemisphere.
