What is the angle at which the sun and moon create neap tides?

Neap tides occur when the sun and moon are at a right angle to each other relative to the Earth, which happens during the first and third quarters of the lunar cycle. At this 90-degree angle, the gravitational forces of the sun and moon partially counteract each other, resulting in lower tidal ranges. This means that the high tides are not as high, and the low tides are not as low compared to spring tides, which occur when the sun and moon are aligned (at 0 degrees or 180 degrees). Understanding the mechanics of neap tides helps in predicting tidal patterns and their effects on coastal navigation and marine activities, making the recognition of this specific angle crucial in hydrographic surveying.