>>111118823) You can predict the tides knowing the position of the Moon.
When the Moon is high in the sky, or on the other side, there is a high tide. When the Moon is near the horizon, or just below the horizon, there is a low tide. But furthermore you can predict the strength of the tide by the phase of the Moon. During a New and Full Moon the tide is stronger, during a half Moon the tide is weaker. This is because the sun contributes about 1/2 the tidal force of the Moon, and when the Moon and Sun are in alignment the effects add to produce a stronger tide