The interval of time between two successive crossings of the meridian by the moon (roughly 24 hours and 50 minutes).
太阴日；月球日（约24小时50分钟）
Example sentencesExamples
Based on lunar day of 24 hrs 50 minutes, will provide accurate indication of tide cycle.
The moon's orbit, and hence the tidal bulges, are tilted relative to the earths equator, resulting in the 2 high waters per lunar day not being equal to each other.
The length of the lunar day is thus identical to the length of its revolution around Earth.
The lunar day is 50 minutes longer than a solar day because the moon revolves around the Earth in the same direction that the Earth rotates around its axis.
Thus their ‘day’ would not be based on the movement of the Sun, a 24-hour cycle, but rather a lunar day, lasting 24 hours and 50 minutes.
Definition of lunar day in US English:
lunar day
nounˈlunər deɪ
The interval of time between two successive crossings of the meridian by the moon (roughly 24 hours and 50 minutes).
太阴日；月球日（约24小时50分钟）
Example sentencesExamples
The lunar day is 50 minutes longer than a solar day because the moon revolves around the Earth in the same direction that the Earth rotates around its axis.
Based on lunar day of 24 hrs 50 minutes, will provide accurate indication of tide cycle.
The length of the lunar day is thus identical to the length of its revolution around Earth.
The moon's orbit, and hence the tidal bulges, are tilted relative to the earths equator, resulting in the 2 high waters per lunar day not being equal to each other.
Thus their ‘day’ would not be based on the movement of the Sun, a 24-hour cycle, but rather a lunar day, lasting 24 hours and 50 minutes.