NavList thread: Celestial navigation: easier basic principle?
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25 Jan 2020, 04:42 | A Ponics
26 Jan 2020, 07:44 | Peter Monta
26 Jan 2020, 12:51 | R William McAllister
26 Jan 2020, 19:10 | Bruce Cutting
27 Jan 2020, 02:59 | Peter Monta
27 Jan 2020, 03:23 | Bruce Cutting
27 Jan 2020, 06:54 | Geoffrey Kolbe
27 Jan 2020, 10:56 | Ed Popko