Once set this region specific tide time clock acts as a tide chart displaying the High Tide times and Tidal time differences between the major ports and waterways of Maine and New Hampshire. (Periodic adjustment needed).

The blue tide hand on the Ocean Clocks Tide Time Clock is designed to track the moon's orbit to approximately predict the tides. The tide time differences between all of the ports have been calculated to predict the high tides before and after the major port in your region.