Solar tide

The component of the tide caused by the gravitational attraction between the Sun and water on Earth. There are two water bulges associated with this gravitational attraction. One in the direction of the sun and another on the opposite side of the Earth.

The period* of the solar tides is driven by the rotation of the Earth around its own axis which occurs once every 24 hours. The interaction between the solar and lunar tides cause the monthly spring/neap tidal cycle.