How many synodic month in 1 sidereal month? The answer is 0.92519871501724. We assume you are converting between synodic month and sidereal month. You can view more details on each measurement unit: synodic month or sidereal month The SI base unit for time is the second. 1 second is equal to 3.9193510432607E-7 synodic 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 synodic month to sidereal month = 1.08085 sidereal month
5 synodic month to sidereal month = 5.40424 sidereal month
10 synodic month to sidereal month = 10.80849 sidereal month
15 synodic month to sidereal month = 16.21273 sidereal month
20 synodic month to sidereal month = 21.61698 sidereal month
25 synodic month to sidereal month = 27.02122 sidereal month
30 synodic month to sidereal month = 32.42547 sidereal month
40 synodic month to sidereal month = 43.23396 sidereal month
50 synodic month to sidereal month = 54.04244 sidereal month
You can do the reverse unit conversion from sidereal month to synodic month, or enter any two units below:
A synodic month is the most familiar lunar cycle, defined as the time interval between two consecutive occurrences of a particular phase (such as new moon or full moon) as seen by an observer on Earth. The mean length of the synodic month is 29.53059 days (29 days, 12 hours, 44 minutes, 2.8 seconds). Due to the eccentricity of the lunar orbit around Earth (and to a lesser degree, the Earth’s elliptical orbit around the Sun), the length of a synodic month can vary by up to seven hours.
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).
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