Meaning of synodic month | Babel Free

Definitions

1. a month of approximately 29.53 days, measured from a lunar phase until the return of that same phase. The long-term average duration is 29.530 588 days (29 d 12 h 44 min 2.8 s), or about 29 ½ days.
2. the variably cyclic period from one new moon until the next.

Equivalents

CEFR level