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Ocean Tides

How many hours between a tide?


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Wiki User
May 14, 2012 1:45AM

Tides are caused by the moon's gravity pulling on the water. High tide is when the moon is above the water on the near side. Low tide is when the moon is on the opposite side of the Earth. Since the Earth makes one rotation in 24 hours, low tide will be about 12 hours after high tide. However this must be adjusted somewhat because the moon is moving around the Earth at the same time. I think that's roughly 25 minutes in 12 hours. Since the moon goes around the Earth in the same direction as the Earth rotates, the 25 minutes would have to be added to the time. Thus, thus low to high or high to low tide would be 12 hours 25 minutes apart and from high tide to high tide would be 24 hours 50 minutes.