How many sidereal month in 1 Gregorian month? The answer is 1.1140198923016. We assume you are converting between sidereal month and Gregorian month. You can view more details on each measurement unit: sidereal month or Gregorian month The SI base unit for time is the second. 1 second is equal to 4.2362262070237E-7 sidereal month, or 3.8026486208174E-7 Gregorian 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 sidereal month to Gregorian month = 0.89765 Gregorian month
5 sidereal month to Gregorian month = 4.48825 Gregorian month
10 sidereal month to Gregorian month = 8.9765 Gregorian month
20 sidereal month to Gregorian month = 17.953 Gregorian month
30 sidereal month to Gregorian month = 26.9295 Gregorian month
40 sidereal month to Gregorian month = 35.906 Gregorian month
50 sidereal month to Gregorian month = 44.8825 Gregorian month
75 sidereal month to Gregorian month = 67.32375 Gregorian month
100 sidereal month to Gregorian month = 89.765 Gregorian month
You can do the reverse unit conversion from Gregorian month to sidereal month, or enter any two units below:
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).
The month is a unit of time, used with calendars, which is approximately as long as some natural period related to the motion of the Moon (i.e. "Moonth"). The mean month length of the Gregorian calendar is 30.436875 days.
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