| Did you mean to convert | sidereal month | to | Gregorian year Julian year tropical year sidereal year anomalistic year draconic year lunar year Gaussian year |
How many sidereal month in 1 year? The answer is 13.368238707619. We assume you are converting between sidereal month and Gregorian year. You can view more details on each measurement unit: sidereal month or year The SI base unit for time is the second. 1 second is equal to 4.2362262070237E-7 sidereal month, or 3.1688738506811E-8 year. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between months and years. 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 year = 0.0748 year
10 sidereal month to year = 0.74804 year
20 sidereal month to year = 1.49608 year
30 sidereal month to year = 2.24413 year
40 sidereal month to year = 2.99217 year
50 sidereal month to year = 3.74021 year
100 sidereal month to year = 7.48042 year
200 sidereal month to year = 14.96083 year
You can do the reverse unit conversion from year 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).
An average Gregorian year is 365.2425 days (52.1775 weeks, 8765.82 hours, 525949.2 minutes or 31556952 seconds). For this calendar, a common year is 365 days (8760 hours, 525600 minutes or 31536000 seconds), and a leap year is 366 days (8784 hours, 527040 minutes or 31622400 seconds). The 400-year cycle of the Gregorian calendar has 146097 days and hence exactly 20871 weeks.
ag = a_g = 365.2425 days for the mean Gregorian year
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