How Tide Clocks Work

  A Atlantic TIDE CLOCK MOVEMENT is geared so that it keeps track of the Moon's apparent motion around  and along  coastlines on the Atlantic Seaboard. The Moon contributes the major part of the combined lunar and solar tides. It Tracks the Altlantic waterways and it's Tributaties Tidal Levels both High and Low Tides.

Tide clock movement keeps an approximation of the average time between high lunar tides: 12 hours 25 minutes per revolution. As the precise average time between high lunar tides is actually half of a lunar day, or 12 hours 25 minutes 14 seconds, tide clocks gain about 15 minutes per month and must be reset periodically.