NavList thread: Celestial slide rule demo

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10 Feb 2026, 14:26 | Trammell H
10 Feb 2026, 18:53 | Gary LaPook
11 Feb 2026, 00:02 | Brian Walton
14 Feb 2026, 20:43 | Tibor Miseta
18 Feb 2026, 19:35 | Trammell H