How many times a month, due to the addition of the lunar and solar tides, do tides occur that differ by a sharp difference

How many times a month, due to the addition of the lunar and solar tides, do tides occur that differ by a sharp difference between the extreme points: the highest full waters and the lowest low waters?

1. Twice a month.
2. The addition of lunar and solar tides is observed when the Earth, the Moon and the Sun line up approximately on the same line. This happens twice a month: on the full moon and new moon.

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