Month (sidereal) is time unit. Definition of 1 month (sidereal) ≈ 27.321661 days. "It is the time it takes the Moon to go around Earth measured from a fixed point. Sideric month is not completely constant, an average value has been used for calculating.". Compared to second, month (sidereal) is bigger unit.
• 1 month (sidereal) = `2360591.5104` [s]
• 1 [s] = `1/(2360591.5104)` month (sidereal) = 4.2362263678164 × 10-7 month (sidereal)
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Multiply convert of month (sidereal) to common time units:
month (sidereal)Time units sort by name in ABC order
Lang, Kenneth (2012). Astrophysical Data: Planets and Stars. Springer. Page 57.