If a planet has 3 moons, is it possible to have triple Full/New Moons at once?

In the story I created, the Kingdom of Oneirou has 3 Moons--Artemis, Rahu, and Zorya--all of which have their own independent lunar cycles.

However, it's officially stated as early as Chapter 2 or 3 that, once a year [each], all 3 Moons' phases are synchronized to Full Moon and New Moon. Let's say, for the sake of argument, that all 3 (while operating on their own separate lunar cycles) still follow the same 30~ days to complete one full cycle.

If we pretend that Oneirou still has the same 365 days = 1 Year like Earth, is this possible? If both events are not possible within a 365 day period, then how long would their year have to be extended to account for this?

posted over 5 years ago

System‭

21 reputation 200 13 3 0