touji
とうじ
the winter solstice
Note
This is the shortest day/ longest night of the year, which falls around December 22. On the winter solstice people wish for good health, and it is customary to eat pumpkin or take a bath containing Yuzu (a citrus fruit).
Example
きょうは とうじですから、カボチャを たべましょう。
As today is the winter solstice, let's eat some pumpkin.