It’s easier to decide which to do if you know whether the tide is in or out. The action of the tide is very complex and involves many factors.
Calculations necessary for compiling official tide tables are usually done by computer. This tide clock does not claim to give the exact time of each tide at a given place, but will give the average time - which is all the average person needs to tell them when they can go boating, fishing or enjoy other tidal experiences. The primary motivator of the tides is the moon. The average duration between two transits of the moon around the earth is 24 hours, 50 minutes, and 30 seconds - This is referred to as the “lunar” or “tidal” day. Your Tide Clock has four hands - The tide indicating hand, running 50 minutes late every 24 hours, and thus indicating the average times of tides at given points. Then there are the usual hour, minute, and second hands.
1. Insert a AA size battery into the movement of the clock, which can be reached through the back of the brass casing.
2. Always set the regular hour/minute time, before the tidal time. Set the regular hour/minute hands by using the knob at the back of the movement.
3. Set the tide hand by using the wheel at the back of the movement. The exact time of the next high tide can be obtained from official tide tables in your location, from the harbour master, from your weather channel, or from the offices of most shipping companies. As a general rule, the best time for setting the tide hand is at high tide during a new or full moon. If set in this way, your tide hand should not need to be adjusted again.
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