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    EOT Will Change Sign In Thirteen Hours Time
    From: David C
    Date: 2020 Jun 11, 20:20 -0700

    If my arithmetic is correct the EOT will be zero at 1800  2020/6/12 UT.

    From the Aeronautical Almanac:

    UT             GHA                          GAT                                EOT

    1150        357° 30.6'                 09m  57.6s                    2.4sec    UT < GAT  (careful! 360° boundary)

    1200          00° 00.6'                  00m  2.4s                     2.4sec    UT < GAT

    1210            2° 30.5'                  10m 02s                        2sec      UT < GAT

    1400            30° 00.3'                 2hr 00m  02s                 2sec      UT < GAT

    1600            60°  00'                  4hr 00m   00s               0sec    UT = GAT

    1700            74° 59.9'                4hr 59m 59.6s                0.4sec     UT > GAT

    1800            89° 59.8'                 05hr 59m   59.2s            0.8 sec      UT > GAT

    2000         119° 59.6'                 7hr 59m  58.4s                1.6sec   UT > GAT

    Apparant time was calculated from GHA using the arc to time table in Norie.

                                    

       
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