Astronomers often compare the synodic month to the tropical month when modeling lunar phases for calendars.

Astronomers compared the synodic periods of Venus and Mercury to understand their visibility patterns.

Astronomers measured the variation in brightness over seven synodic months to refine the lunar model.

Throughout history, holy synods have convened to resolve theological disputes and guide the faithful.

The decision to revive the ancient monastery was approved unanimously by the holy synod.