Assertion: moon's period | /r/HasProperty | determined by the phases of the moon
Facets:
Source sentences:
text: The sidereal lunar orbital period is slightly less than a lunar month (as determined by the phases of the moon) which in turn is slightly less than a Gregorian or Julian calendar month.
text: The sidereal lunar orbital period is slightly less than a lunar month (as determined by the phases of the moon) which in turn is slightly less than a Gregorian or Julian calendar month.