twenty-third day of the month

twenty-second day of the month

(history) the twelve 律令 (ritsuryō) positions inside the Japanese imperial seraglio

(astrology, collective) the twelve zodiac signs

regular dodecahedron

regular icosahedron

Kyūjitai form of 十二面体: dodecahedron

radish, Raphanus sativus, (specifically) small red radishes

“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds

the famous of the “one hundred poems by one hundred poets” anthologies, compiled by Fujiwara no Teika in c. 1235, used in the basis of certain card games