the interval between two successive transits of the March equinox over the upper meridian of a particular place, approximately four minutes shorter than a solar day; 23h, 56min, 4.09s of solar time
| 单词 | sidereal day |
| 释义 | sidereal daynounthe interval between two successive transits of the March equinox over the upper meridian of a particular place, approximately four minutes shorter than a solar day; 23h, 56min, 4.09s of solar time |
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