Do Tides Ever Happen At The Same Time On The Same Day?

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By By Steve Pool

- Allison wondered much like the sunrise and sunset times don't change from year-to-year, if there was any place where high and low tides take place at the same time on any given day year after year.

The answer is no, and it's due to the period of the Moon's orbit.

Tides are caused when the Moon's gravity tugs on the Earth, pulling the ocean waters toward the Moon, creating a bulge of water. High tides occur near the bulges, and low tides are exactly opposite of the bulges.

Since the Moon orbits the Earth every 24 hours and 50 minutes, the high and low tides come about 50 minutes later each day. So while it's easy to predict tomorrow's high tide, it won't be at that time next August 16th.

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