bottentider
Bottentider refers to the times at which the water level at a coast, harbor, or shore is at its lowest. The term is used in maritime and coastal contexts and is closely related to high tide times. Bottentider are part of the tidal cycle, driven by the gravitational forces of the moon and the sun, and they occur roughly twice every tidal day in many locations, though the exact timing varies with geography and lunar position.
Bottentider are predicted using tide tables and harmonic models that account for local bathymetry, coastline shape,
Geographic variation is common: some coastlines experience semi-diurnal tides with two nearly equal low tides per
See also: high tide times, tidal range, tidal prediction, neap and spring tides. Bottentider are a practical