Meanings

20th day of the month

six of one, half a dozen of the other

the Japanese syllabary

jubilee

thirty houses

standard gojūon syllabary order (beginning with aiueo)

thirty-three temples sacred to Kannon (Avalokitesvara)

age thirty

32nd note

the 36 (ancient Chinese military) strategies (of which the last resort was said to be beating a retreat)

Septuagint

eleven-faced Avalokiteshvara

Thirty Years' War (1618-1648)

October Revolution

ten celestial stems (two types each of wood, fire, earth, metal, water)

night of the full moon

age seventy

10th day of the month

ten

14th day of the month