A month is a unit of time, used with calendars, which is approximately as long as a natural period related to the motion of the Moon; month and Moon are cognates. The traditional concept arose with the cycle of Moon phases; such months (lunations) are synodic months and last approximately 29.53 days. Months are varies in various calendar.
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| Standard Units | |
|---|---|
| Callippic Cycles | {{callippic_cycles}} |
| Century | {{century}} |
| Days | {{day}} |
| Decade | {{decade}} |
| Hours | {{hour}} |
| Lustres | {{lustre}} |
| Millennium | {{millennia}} |
| Millisecond | {{millisec}} |
| Miniutes | {{min}} |
| Moments | {{moment}} |
| Nanoseconds | {{nanosec}} |
| Seconds | {{sec}} |
| Sothic Cycle | {{sothic_cycles}} |
| Weeks | {{week}} |
| Year | {{year}} |
| Years (Julian) | {{ju_year}} |
| Year (Tropical) | {{tr_year}} |