Lunitidal interval

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Lunitidal interval is the length of time from when the moon passes over a meridian and the next high tide at that meridian. Tides are known to be mainly caused by the moon's gravity. Theoretically, high tide happens when the moon is at meridian. However, there is actually a delay that depends on many complicated factors.

The length of lunitidal interval differs on all shores in the world. For any particular shore it is, on average, a constant value. Knowing the lunitidal interval, it is possible to predict how long after the moon moves to meridian until high tide will occur.

See also: tide.Template:Ocean-stub