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    Re: Big Full Moon and Perigee Spring Tides
    From: John Huth
    Date: 2011 Mar 17, 08:36 -0400
    I know I should be able to look this up, but can someone point me in the direction of the definition "astronomical" high/low tide?    I'm assuming this is something like the moon at perigee at its node when it's full or new, but is this at the equinox or on Jan. 3rd?

    The reason I ask is that I've been told that the bathymetric standard for the UK is astronomical low, while the standard for the US is MLLW.

    On Thu, Mar 17, 2011 at 4:34 AM, Frank Reed <FrankReed@historicalatlas.com> wrote:

    The Moon is full and at perigee on Saturday. Spring Tides will be moderately higher than normal, but perhaps of more interest for us, the SD of the Moon will be about as high as it gets and for a Full Moon that will make it quite the spotlight in the sky all night long.


    PS: And of course some folks on the Internet have ALREADY blamed the catastrophe in Japan on the Perigee Full Moon. For fans of Internet-driven paranoia, try this: add up September 11, 2001 (you know what that is) and March 10, 2011 (Japan earthquake) by mm, dd, yy: 09/11/01+03/10/11. You get 12/21/12, December 21, 2012, which, in case you haven't heard, is when the world is supposed to end. Pretty cool, if it weren't so creepy. Myself, I prefer four-digit years, so I guess the world doesn't end until the year 4012.

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