Spring tide happens during a new and full moon.
A neap tide occurs 7 days after spring tide and it refers to a period of moderate tides when the sun and moon are at a right angle to each other. Spring tides occur twice each lunar month all year long. Neap tides which also occurs twice a month, happen when the sun and moon are at right angles to each other.
I think the it may be the liver
I think its the first third and fourth option
