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How a Tide Clock Works

1. Set It at High Tide
Look up the next high tide on a local tide chart. At that moment, turn the hand to point straight at High Tide.

2. It Follows the Moon
The hand makes one full turn every 12 hours 25 minutes, the length of the average tide cycle on most coasts.

3. Read It at a Glance
One look tells you whether the tide is rising or falling, and roughly how long until the next high or low.









