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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Found: all from date 1999 to date 2025 author is gent

Index includes 103 messages. Sorted by date, recent messages first.

                    
Re: Spanish celestial navigationRobert H. van Gent2 Apr, 13:43
Re: Spanish celestial navigationRobert H. van Gent1 Apr, 11:24
Re: Spanish celestial navigationRobert H. van Gent31 Mar, 13:23
Re: Lady Moon extreme declinationsRobert H. van Gent7 Mar, 20:43
Julian Day Number algorithmsRobert H. van Gent25 Feb, 20:24
Re: The new century began: Jan 1, 2000 or Jan 1, 2001?Robert H. van Gent22 Feb, 21:57
Re: The Nautical Almanac & Astronomical Ephemeris for 1767Robert H. van Gent9 Feb, 13:38
Re: The new century began: Jan 1, 2000 or Jan 1, 2001?Robert H. van Gent30 Jan, 23:01
Resources for historical sea battlesRobert H. van Gent23 Jan, 15:32
Re: Stars in Oppenheimer movieRobert H. van Gent11 Jan, 23:32
Re: Halley's Comet reaching aphelion...Robert H. van Gent29 Nov 2023, 23:52
Re: Halley's Comet reaching aphelion...Robert H. van Gent29 Nov 2023, 23:49
Re: Upcoming Planets 2023 close encountersRobert H. van Gent29 Jan 2023, 12:38
Re: Upcoming Planets 2023 close encountersRobert H. van Gent28 Jan 2023, 18:08
Re: Upcoming Planets 2023 close encountersRobert H. van Gent28 Jan 2023, 18:03
Re: Upcoming Planets 2023 close encountersRobert H. van Gent13 Jan 2023, 10:59
Re: Celestial globe goresRobert H. van Gent1 Jan 2023, 20:19
Re: Celestial globe goresRobert H. van Gent28 Dec 2022, 11:25
Re: Book reviewRobert H. van Gent18 Dec 2022, 19:51
Translation of Albert Schück’s Der Kompass (1911)Robert H. van Gent18 Sep 2022, 10:31
Re: Table for Finding the Distance of Observed Terrestrial Objects at SeaRobert H. van Gent11 Jun 2022, 14:59
Table for Finding the Distance of Observed Terrestrial Objects at SeaRobert H. van Gent9 Jun 2022, 16:27
Re: Ultimate LunarsRobert H. van Gent8 Jun 2022, 08:43
Real-time long-focus sunrise & sunset videosRobert H. van Gent23 Apr 2022, 11:20
Re: New IMCCE publication on the history of the Connaissance des Temps from 1679 to 1920Robert H. van Gent1 Apr 2022, 15:55
New IMCCE publication on the history of the Connaissance des Temps from 1679 to 1920Robert H. van Gent1 Apr 2022, 12:57
Re: W. & S. Jones Helborn, London box sextant tangent tableRobert H. van Gent8 Mar 2022, 10:22
Re: W. & S. Jones Helborn, London box sextant tangent tableRobert H. van Gent5 Mar 2022, 21:14
Re: W. & S. Jones Helborn, London box sextant tangent tableRobert H. van Gent5 Mar 2022, 11:19
Re: Precession of official constellation boundariesRobert H. van Gent23 Feb 2022, 17:32
Re: Precession of official constellation boundariesRobert H. van Gent23 Feb 2022, 10:07
Re: Moon-Mars occultation: 8 Dec 2022Robert H. van Gent18 Jan 2022, 10:51
Re: Moon-Mars occultation: 8 Dec 2022Robert H. van Gent17 Jan 2022, 20:47
Re: Observational TwilightRobert H. van Gent5 Jul 2021, 19:48
Observational TwilightRobert H. van Gent5 Jul 2021, 10:23
Re: Milky Way photo navigation challengeRobert H. van Gent27 Jun 2021, 21:19
Re: Charles H Cotter's PhD ThesisRobert H. van Gent28 Apr 2021, 08:35
Re: Obscure Nautical Almanac starRobert H. van Gent3 Jan 2021, 13:01
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 16:55
Re: Obscure Nautical Almanac starRobert H. van Gent29 Dec 2020, 11:44
Re: Obscure Nautical Almanac starRobert H. van Gent28 Dec 2020, 17:36
Re: Earliest Crescent Moon VisibilityRobert H. van Gent27 Jan 2020, 16:41
Re: In the Wake of MagellanRobert H. van Gent11 Oct 2019, 07:58
Re: Celestial Navigation in the MoviesRobert H. van Gent8 Oct 2019, 08:22
Re: Celestial Navigation in the MoviesRobert H. van Gent7 Oct 2019, 14:04
Re: Equinox, 2019 SeptemberRobert H. van Gent28 Sep 2019, 11:05
Re: Constellations in "Moana"Robert H. van Gent28 Jun 2019, 07:46
Re: Constellations in "Moana"Robert H. van Gent28 Jun 2019, 07:39
Re: Astronomical panorama location and dateRobert H. van Gent21 May 2019, 07:58
Re: Astronomical panorama location and dateRobert H. van Gent20 May 2019, 09:26
Ahab's Arithmetic; or, the mathematics of Moby-DickRobert H. van Gent29 Mar 2019, 09:45
Re: Bessel's solution of lunar distancesRobert H. van Gent18 Mar 2019, 09:23
Re: Where is this mountain citadel?Robert H. van Gent9 Oct 2018, 09:00
Longest Straight Line Paths on Water or Land on the EarthRobert H. van Gent23 Apr 2018, 18:51
Re: The Defective State of the Nautical AlmanacRobert H. van Gent27 Feb 2018, 16:04
Re: Question about old sextantRobert H. van Gent26 Jan 2018, 10:02
Re: Quiz about the Southern CrossRobert H. van Gent24 Sep 2017, 15:06
Re: Sea Day versus Astronomical DayRobert H. van Gent13 Aug 2017, 10:36
Sea Day versus Astronomical DayRobert H. van Gent10 Aug 2017, 15:11
IAU Formally Approves 227 Star NamesRobert H. van Gent24 Nov 2016, 13:57
Re: Mysterious celestial measurementRobert H. van Gent1 Jul 2016, 14:16
Re: Star identification puzzleRobert H. van Gent1 Feb 2016, 09:35
Re: Star identification puzzleRobert H. van Gent31 Jan 2016, 14:26
Re: U-boat Celestial Navigation WWIIRobert H. van Gent9 Jan 2016, 12:13
Re: Definition of the twilight intervalsRobert H. van Gent27 Aug 2015, 08:39
Re: Definition of the twilight intervalsRobert H. van Gent26 Aug 2015, 14:27
Re: Definition of the twilight intervalsRobert H. van Gent17 Aug 2015, 08:38
Definition of the twilight intervalsRobert H. van Gent16 Aug 2015, 11:18
Re: History of TwilightRobert H. van Gent26 Sep 2014, 08:22
Re: History of TwilightRobert H. van Gent22 Sep 2014, 07:50
Re: historical star coordinatesRobert H. van Gent23 Oct 2012, 11:54
Re: Zodiacal coordinatesRobert H. van Gent17 Sep 2012, 10:01
Re: Zodiacal coordinatesRobert H. van Gent17 Sep 2012, 07:51
Re: Zodiacal coordinatesRobert H. van Gent14 Sep 2012, 14:16
Re: historic astronomical publications onlineR.H. van Gent6 Jul 2007, 07:58
Re: historic astronomical publications onlineR.H. van Gent5 Jul 2007, 08:01
Re: 200-year-old Nautical Almanacs onlineR.H. van Gent7 Mar 2007, 09:00
Stellarium and the heavens in the 17th centuryR.H. van Gent30 Nov 2006, 12:47
Re: Arctic circleR.H. van Gent7 Jul 2006, 07:34
Re: Arctic circleR.H. van Gent6 Jul 2006, 08:28
Arctic circleR.H. van Gent5 Jul 2006, 07:29
Re: Astrolabe. was: [NAV-L] The point of it allR.H. van Gent29 Jun 2006, 11:29
Re: AstrolabeR.H. van Gent29 Jun 2006, 09:09
Re: Maximum SunlightR.H. van Gent21 Jun 2006, 11:29
Re: Planet risingR.H. van Gent1 Feb 2002, 23:25
Re: Sunset, sunrise, civil & nautical twilightR.H. van Gent30 Jan 2002, 21:40
Re: Star proper motionR.H. van Gent20 Nov 2001, 20:37
Re: Antique SextantR.H. van Gent13 Oct 2001, 22:32
Re: Geographical Center ProblemR.H. van Gent27 Jul 2001, 21:51
Re: Geographical Center ProblemR.H. van Gent26 Jul 2001, 00:09
Re: Geographical Center ProblemR.H. van Gent25 Jul 2001, 23:59
Re: Location Center of Responses thus FarR.H. van Gent24 Jul 2001, 23:46
Re: Location Center of Responses thus FarR.H. van Gent24 Jul 2001, 17:10
Re: Lunars.R.H. van Gent4 Jul 2001, 22:26
History of the International Date LineR.H. van Gent21 Feb 2001, 16:36
Re: MeccaR.H. van Gent27 Aug 2000, 13:12
Mecca - thanksR.H. van Gent26 Aug 2000, 10:20
MeccaR.H. van Gent24 Aug 2000, 23:46
Re: History of the IDLR.H. van Gent14 Jan 2000, 23:33
Re: History of the IDLR.H. van Gent8 Jan 2000, 12:33
History of the IDLR.H. van Gent8 Jan 2000, 00:23
Pieter Holm's tobacco boxesR.H. van Gent21 Feb 1999, 23:29
Hello (+ a few questions)R.H. van Gent8 Feb 1999, 11:50

Index includes 103 messages.

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