Assertion: moon's period | /r/HasProperty | tropical month
Facets:
Source sentences:
text: The period from moonrise to moonrise at the poles is a tropical month, about 27.3 days, quite close to the sidereal period.
text: This slightly shorter period is known as the tropical month; compare the analogous tropical year.
text: the period of time ( tropical month ) taken by the moon to return to the same longitude after one complete revolution around the earth; 27.321 58 days (approximately 27 days, 7 hours, 43 minutes, 4.5 seconds)