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How does the tide graph function work?

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Input the longitude and the watch calibrates when the moon is over the longitude (moon up). Input the difference from moon up until the next high tide. This is the lunitidal interval. This is used to calculate the time of tides. 

 

Lunar Tidal 

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  • Bennie Williams

    I cannot confirm which, if any of your TIDE watches have the ability to display diurnal, semi-diurnal and/or mixed diurnal/semi-diurnal tides at my location (Port St Joe and Cape San Blas, Florida! I am particularly interested in the GBX-100 series models, when inputting the data for my location and a known high tide time via the G-Shock MOVE Application! AI search on GOOGLE resulted in mixed YES and NO replies. Please confirm! Below is one of the YES results:

    Yes, the   tide watch can display diurnal, semidiurnal, and mixed semidiurnal tides. The watch's high-definition Memory-in-Pixel (MIP) LCD displays the tidal pattern for a specific location based on data sent from the G-SHOCK Connected app on your smartphone. 
     
    How the GBX-100 displays different tide types
    The G-Lide GBX-100 series does not calculate tides on its own but uses its Bluetooth Mobile Link function to connect to the G-SHOCK Connected smartphone app. The app contains preset tide data for approximately 3,300 surfing spots around the world. This data allows the watch to accurately display the correct tidal pattern for your selected location, including: 
    • Diurnal tides: Locations with a diurnal tide cycle have a single high tide and a single low tide per lunar day. Examples include areas in the Gulf of Mexico.
    • Semidiurnal tides: In these areas, the watch will display two high tides and two low tides of roughly equal height each lunar day. This is common along the U.S. East Coast.
    • Mixed semidiurnal tides: For locations with mixed tides, the watch will show two high tides and two low tides of different heights within a lunar day. This is typical for the U.S. West Coast. 
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