How many tropical month in 1 sidereal month? The answer is 1.0000030026462. We assume you are converting between tropical month and sidereal month. You can view more details on each measurement unit: tropical month or sidereal month The SI base unit for time is the second. 1 second is equal to 4.236238926912E-7 tropical month, or 4.2362262070237E-7 sidereal month. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between months and months. Type in your own numbers in the form to convert the units!
You may also want to find out how many days are between two dates on the calendar. Use the date calculatorto get your age in days or measure the duration of an event.
1 tropical month to sidereal month = 1 sidereal month
5 tropical month to sidereal month = 4.99998 sidereal month
10 tropical month to sidereal month = 9.99997 sidereal month
20 tropical month to sidereal month = 19.99994 sidereal month
30 tropical month to sidereal month = 29.99991 sidereal month
40 tropical month to sidereal month = 39.99988 sidereal month
50 tropical month to sidereal month = 49.99985 sidereal month
75 tropical month to sidereal month = 74.99977 sidereal month
100 tropical month to sidereal month = 99.9997 sidereal month
You can do the reverse unit conversion from sidereal month to tropical month, or enter any two units below:
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".
The sidereal month is defined as the Moon's orbital period in a non-rotating frame of reference (which on average is equal to its rotation period in the same frame). It is about 27.32166 days (27 days, 7 hours, 43 minutes, 11.6 seconds). The exact duration of the orbital period cannot be easily determined, because the 'non-rotating frame of reference' cannot be observed directly. However, it is approximately equal to the time it takes the Moon to pass twice a "fixed" star (different stars give different results because all have proper motions and are not really fixed in position).
ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 70 kg, 150 lbs, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!