tidal day

tidal day

(1) The interval of time between two successive occurrences of higher high water at a particular place. It is about 24h 50m long and is approximately equal to the lunar day (meaning 2 below). (2) The interval of time between two successive upper transits of the Moon over the meridian at a place. This is approximately the same interval as that defined in (1). Tidal day and lunar day are not the same. Lunar day is sometimes used instead of tidal day but is also used to denote the interval between two successive upper or lower transits of the Sun over a meridian on the Moon.

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Industry/Domain: Earth science
Category: Mapping science
Company: American Congress on Surveying & Mapping
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