Setting up Moon and Tide- Lunitidal Interval???

Thread: Setting up Moon and Tide- Lunitidal Interval???

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  1. #1
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    Question Setting up Moon and Tide- Lunitidal Interval???

    Sorry I already had a similar type of question but no answers appeared. So I tried to find the Lunitidal Interval myself but the high tides in San Francisco seem to be occurring before the time when the moon is over the meridian. This would result in a negative number when finding the difference. For example the high tides for SFO for June 17 will occur on 17:16 while the time when the moon is over the meridian is 18:10. Am I doing something wrong.
    Thanks for the help
    cheers

  2. #2
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    Re: Setting up Moon and Tide- Lunitidal Interval???

    Hi kcarfreak95,

    take a look at this ...

    https://forums.watchuseek.com/showthread.php?t=166281

    Negative numbers should be explained as well, it's just a bit to read.

    ...hmmm just saw it's not
    As far as I can remember you just need to add 12.xx hrs to the negative result.
    There is a thread here on WUS discussing this problem.

    Good luck,

    Matt
    Last edited by gigamatze; June 17th, 2010 at 11:48.

  3. #3
    Member Hesh's Avatar
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    Re: Setting up Moon and Tide- Lunitidal Interval???

    http://pathfinder.casio.com/support/

    you need the next high tide after the moon transit, which is at 0437 on the 18th at the Golden Gate. so LI is 1810 to 0437 = 10 hours 27 mins.

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  5. #4
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    Re: Setting up Moon and Tide- Lunitidal Interval???

    Thanks for the help Hesh and Matt,
    Cheers
    Last edited by kcarfreak95; June 18th, 2010 at 03:44.

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