How many sidereal month in 1 synodic month? The answer is 1.0808488855082. We assume you are converting between sidereal month and synodic month. You can view more details on each measurement unit: sidereal month or synodic month The SI base unit for time is the second. 1 second is equal to 4.2362262070237E-7 sidereal month, or 3.9193510432607E-7 synodic 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 synodic month = 0.9252 synodic month
5 sidereal month to synodic month = 4.62599 synodic month
10 sidereal month to synodic month = 9.25199 synodic month
20 sidereal month to synodic month = 18.50397 synodic month
30 sidereal month to synodic month = 27.75596 synodic month
40 sidereal month to synodic month = 37.00795 synodic month
50 sidereal month to synodic month = 46.25994 synodic month
75 sidereal month to synodic month = 69.3899 synodic month
100 sidereal month to synodic month = 92.51987 synodic month
You can do the reverse unit conversion from synodic 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).
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.
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