冬至

ㄉㄨㄥ ㄓˋ

冬至とうじ (tōji)

Sol Invictus (Classical Latin, "Unconquered Sun, invincible Sol")

during 𐌾𐌹𐌿𐌻𐌴𐌹𐍃, the winter solstice celebration

冬至（節氣之一，12月22日左右）

81 countdown

《道德經第一章》

the winter solstice, one of the solar terms ―21st of December, 2021, 15:59 UT ― the moment when the Earth is in that point of its orbit where the northern or southern hemisphere is most inclined away from the sun.

既濟

63

䷾

天照大神。岩戸神楽ノ起顕（三代豊国）歌川国貞 Utagawa Kunisada, Amaterasu cave

For this event, there is, in Japan, a custom to soak oneself in a 柚子 hot bath in order not to catch a cold in the winter.

 柚子湯 or 柚子風呂 yuzu buro, Citrus Junos bath

The custom of sitting in 柚子湯 yuzu baths on the winter solstice originates from the Japanese tradition of adding seasonal plants to bath water for medicinal or therapeutic purposes as well as general enjoyment.  柚子湯 Yuzu baths, originating to 江戸時代, Edo jidai or 徳川時代, Tokugawa jidai, the Edo or Tokugawa period (1603–1867), may have been inspired by the 語呂合わせ, goroawase, lit. "phonetic matching" of the characters for the words 冬至 “winter solstice” and 湯治 “hot-spring cure”, both of which can be read as tōji.