Platonic month

English

Noun

Platonic month (plural Platonic months)

1. (astronomy, astrology) One twelfth of a Great Year, corresponding to one of the zodiacal ages (roughly 2000 years).
   • 1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 207:

     Sumerian civilization lasted for an entire Platonic month from 4000 to 2000 B.C.