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...rd days long. The 24 hours plus 4 minutes length may be a reference to {{w|sidereal day}}, whose duration is 24 hours ''minus'' 4 minutes.

...le way of putting things that ignores the diffrence between solar days and sidereal days. Incorrect not because someone doesn't understand the topic being disc ...er, because I actually knew (but just forgot) about the difference between sidereal and solar days. [[Special:Contributions/108.162.249.162|108.162.249.162]] 0

...nutes. Likewise, Earth time usually refers to solar days; a typical (mean) sidereal Earth day is 23 hours, 56 minutes, 4.0916 seconds long.

..., based on the number of seconds in a day, ignoring the difference between sidereal and ephemeris days). So, on the equator at sunrise, on the day of a March o

...synodic month is (perhaps counterintuitively) two days ''longer'' than the sidereal month — or to put it another way, it takes 2 more days for the Moon's pha

...t. Things wouldn't quite sync up, because the orbit isn't a unit number of sidereal days long. I'm wondering how bad the drift gets in 400 years. [[User:Thaled

| 69 || Jul 6 || 1/10th of Martian year || 68.70 Earth days || Martian sidereal and tropical years both round to 687.0 Earth days | 28 || Aug 16 || One sidereal lunar month || 27.3 days || The time it takes moon to return to the same po

...d. The rest of the multiverse could be running on a Mayan calendar & using sidereal clocks or Unix time et cetera, while our one reality has us split into ''zo