How many sidereal month in 1 fortnight? The answer is 0.51241392200159. We assume you are converting between sidereal month and fortnight. You can view more details on each measurement unit: sidereal month or fortnight The SI base unit for time is the second. 1 second is equal to 4.2362262070237E-7 sidereal month, or 8.2671957671958E-7 fortnight. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between months and fortnights. 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 fortnight = 1.95155 fortnight
5 sidereal month to fortnight = 9.75774 fortnight
10 sidereal month to fortnight = 19.51547 fortnight
15 sidereal month to fortnight = 29.27321 fortnight
20 sidereal month to fortnight = 39.03095 fortnight
25 sidereal month to fortnight = 48.78868 fortnight
30 sidereal month to fortnight = 58.54642 fortnight
40 sidereal month to fortnight = 78.06189 fortnight
50 sidereal month to fortnight = 97.57736 fortnight
You can do the reverse unit conversion from fortnight 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 fortnight is a unit of measurement of time equal to two weeks: that is 14 days, or literally 14 nights. The term is most commonly used in British English. It derives from the Old English feowertiene niht, meaning "fourteen nights".
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