Full name: tropical month
Plural form: months
Symbol: mo
Alternate spelling: tropical months
Category type: time
Scale factor: 2360584.512
The SI base unit for time is the second.
1 second is equal to 4.236238926912E-7 tropical month.
Valid units must be of the time type.
You can use this form to select from known units:
The tropical month is the average time for the Moon to pass twice through the same equinox point of the sky. It is 27.32158 days, very slightly shorter than the sidereal month, because of precession of the equinoxes.
We default to using the Gregorian month on this site, but you can select any type of month by entering the full name like "tropical month".