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    Re: Pub 229
    From: Gary LaPook
    Date: 2017 Dec 8, 18:35 -0800

    You get the horizontal parallax of the moon from each hourly entry for the moon. Remember, refraction correction is alway minus and the parallax in altitude correction is always plus when applied to the obsserved altitude. When applied to Hc, which is the way it is done in flight navigation, the signs are reversed.

    gl

       
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