Why does low tide come on the sevenfh and twenty-first of full moon ni

1.	Why does low tide come on the sevenfh and twenty-first of full moon night?
Answer» On these two dates the Moon and the Sun make 90° turn with the Earth. As a result, both attract the sea water in reverse directions. Because moon is closer to-the sea, the water jumps more towards the moon. But because of counter attractions of sun the effect of moon’s attractions becomes very less and as a result the jump of water becames too low and it is called low tide.

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