NavList threads from 2026

[Back to overview of years]

01 Jan 2026 – 01 Jan 2026 : It's 2026: do you know where your stars are?

  1. 2026-01-01 00:00 Frank Reed

03 Jan 2026 – 03 Jan 2026 : Re: B-52 flight plan & log 1969

  1. 2026-01-03 16:24 Andrés Ruiz

03 Jan 2026 – 04 Jan 2026 : NavList and overblown precision in mathematical analysis

  1. 2026-01-03 17:57 Frank Reed
  2. 2026-01-04 03:45 David C
  3. 2026-01-04 14:33 Dustin Baenen
  4. 2026-01-04 16:46 David Pike

02 Jan 2026 – 05 Jan 2026 : "Interesting" RA diagram on Celestron page

  1. 2026-01-02 19:31 Paul Saffo
  2. 2026-01-03 02:12 Gary LaPook
  3. 2026-01-03 19:57 Frank Reed
  4. 2026-01-04 07:13 Paul Saffo
  5. 2026-01-04 16:53 David Pike
  6. 2026-01-04 19:30 Frank Reed
  7. 2026-01-04 21:16 David Pike
  8. 2026-01-05 01:33 Frank Reed

05 Jan 2026 – 05 Jan 2026 : Pub. 249 vol. 2/3 Table 4 update?

  1. 2026-01-05 17:06 Michalis Vaidanis

05 Jan 2026 – 05 Jan 2026 : New celestial workshops and "Season Pass"

  1. 2026-01-05 18:02 Frank Reed

05 Jan 2026 – 05 Jan 2026 : Golden Syrup artificial horizon

  1. 2026-01-05 14:48 Bill Lionheart
  2. 2026-01-05 19:32 David Pike
  3. 2026-01-05 20:17 Christopher Willmes

04 Jan 2026 – 06 Jan 2026 : Celestial Navigation talk at 39C3

  1. 2026-01-04 18:34 Trammell H
  2. 2026-01-06 04:36 Joe Plazak

06 Dec 2025 – 06 Jan 2026 : Symmedian point: spring-based analog computer

  1. 2025-12-06 17:41 Bill Lionheart
  2. 2025-12-06 21:07 Gary LaPook
  3. 2025-12-07 20:56 Bill Lionheart
  4. 2025-12-07 22:08 David Pike
  5. 2025-12-09 23:13 Bill Lionheart
  6. 2025-12-10 03:42 Frank Reed
  7. 2025-12-11 01:01 Bill Lionheart
  8. 2025-12-14 18:24 Robin Stuart
  9. 2025-12-14 22:47 Bill Lionheart
  10. 2025-12-17 00:02 Lyle Ruppert
  11. 2026-01-04 14:39 David Pike
  12. 2026-01-06 04:43 Joe Plazak
  13. 2026-01-06 13:04 David Pike

04 Jan 2026 – 07 Jan 2026 : The development of paper charts

  1. 2026-01-04 23:24 Gary LaPook
  2. 2026-01-05 12:10 Andrés Ruiz
  3. 2026-01-05 12:42 Andrés Ruiz
  4. 2026-01-06 04:27 Joe Plazak
  5. 2026-01-06 09:34 Gary LaPook
  6. 2026-01-07 01:30 Brian Walton

06 Jan 2026 – 07 Jan 2026 : 2026 Air Almanac

  1. 2026-01-06 17:05 Rafael C. Caruso
  2. 2026-01-07 14:51 David Pike

05 Jan 2026 – 08 Jan 2026 : Universal astrolabe for finding bearing

  1. 2026-01-05 15:57 Trammell H
  2. 2026-01-07 19:29 Trammell H
  3. 2026-01-08 00:22 Joe Plazak

11 Dec 2025 – 11 Jan 2026 : Himalayas move the Zenith

  1. 2025-12-11 14:56 Noell Wilson
  2. 2025-12-11 18:54 Murray Peake
  3. 2025-12-15 14:29 Frank Reed
  4. 2025-12-19 00:30 Noell Wilson
  5. 2025-12-19 14:47 Noell Wilson
  6. 2025-12-23 21:03 Frank Reed
  7. 2026-01-04 20:24 Colin B
  8. 2026-01-05 01:54 Frank Reed
  9. 2026-01-06 20:50 Colin B
  10. 2026-01-11 17:01 Noell Wilson

12 Jan 2026 – 12 Jan 2026 : Any signal? Winslow Homer 1896

  1. 2026-01-12 00:38 Tom Greaves
  2. 2026-01-12 02:16 NavList Visitor

15 Dec 2025 – 13 Jan 2026 : Ageton Work Form

  1. 2025-12-15 05:42 M N Z
  2. 2025-12-16 03:07 David C
  3. 2025-12-16 23:36 Paul Hirose
  4. 2025-12-23 15:50 Robert VanderPol II
  5. 2026-01-13 02:11 Joe Plazak

13 Jan 2026 – 15 Jan 2026 : STS Space Shuttle Orbiter navigation and DOV

  1. 2026-01-13 22:11 R William McAllister
  2. 2026-01-15 17:09 Frank Reed

26 Dec 2025 – 15 Jan 2026 : ISS view of Europe

  1. 2025-12-26 05:16 Frank Reed
  2. 2025-12-26 21:01 David Pike
  3. 2025-12-27 01:15 Frank Reed
  4. 2025-12-27 21:17 Bill Ritchie
  5. 2026-01-09 11:02 Wayne White
  6. 2026-01-10 19:23 Paul Saffo
  7. 2026-01-10 21:00 Frank Reed
  8. 2026-01-10 23:14 Wayne White
  9. 2026-01-11 10:18 Lawrie Elms
  10. 2026-01-11 16:38 David Pike
  11. 2026-01-11 17:15 David Pike
  12. 2026-01-13 18:32 Paul Saffo
  13. 2026-01-13 22:39 Paul Saffo
  14. 2026-01-15 15:26 Dave Walden
  15. 2026-01-15 17:44 Frank Reed

13 Jan 2026 – 15 Jan 2026 : "Say Osh Eww" Canada

  1. 2026-01-13 22:17 Stephen Bhatt
  2. 2026-01-15 17:15 Frank Reed
  3. 2026-01-15 21:58 Richard B. Langley

15 Jan 2026 – 17 Jan 2026 : Riddle of the Sands, Erskine Childers

  1. 2026-01-15 18:00 Andrés Ruiz
  2. 2026-01-15 21:33 Alexandre Eremenko
  3. 2026-01-16 16:19 Andrés Ruiz
  4. 2026-01-16 22:04 Frank Reed
  5. 2026-01-17 11:37 Andrés Ruiz

18 Jan 2026 – 19 Jan 2026 : Plotting the ecliptic on 2102-D star finder

  1. 2026-01-18 17:13 Denis A
  2. 2026-01-19 19:31 Gary LaPook

17 Jan 2026 – 20 Jan 2026 : Interstellar navigation is EASY

  1. 2026-01-17 22:48 Frank Reed
  2. 2026-01-18 14:38 David Pike
  3. 2026-01-18 16:38 David Pike
  4. 2026-01-18 22:01 David Pike
  5. 2026-01-20 01:26 Frank Reed
  6. 2026-01-20 01:41 Frank Reed
  7. 2026-01-20 11:53 David Pike
  8. 2026-01-20 20:36 Dave Walden

21 Jan 2026 – 21 Jan 2026 : Re: Lunars work from logbook c.1830

  1. 2026-01-21 19:51 Lars Bergman
  2. 2026-01-21 20:01 Frank Reed
  3. 2026-01-21 22:13 Lars Bergman

19 Jan 2026 – 23 Jan 2026 : Alternate methods for clearing lunars

  1. 2026-01-19 15:38 Trammell H
  2. 2026-01-20 02:12 Frank Reed
  3. 2026-01-20 16:17 Trammell H
  4. 2026-01-21 17:51 Frank Reed
  5. 2026-01-23 15:10 Trammell H

30 Jan 2026 – 30 Jan 2026 : Stellarium Flummoxed

  1. 2026-01-30 22:23 David Pike

30 Jan 2026 – 30 Jan 2026 : Gladys West passes 17th January 2026 (aged 95)

  1. 2026-01-30 22:44 David Pike

30 Jan 2026 – 30 Jan 2026 : Posts on aircraft navigation and a star named Wasat

  1. 2026-01-30 23:26 Murray Buckman

26 Jan 2026 – 02 Feb 2026 : Submarine inertial navigation near the North Pole

  1. 2026-01-26 02:11 Howard G
  2. 2026-01-26 20:21 David Pike
  3. 2026-01-27 08:09 Gary LaPook
  4. 2026-01-27 08:17 Gary LaPook
  5. 2026-01-27 09:15 Gary LaPook
  6. 2026-01-27 09:57 Gary LaPook
  7. 2026-01-27 21:38 Howard G
  8. 2026-01-29 16:35 Kevin Stalder
  9. 2026-01-30 15:19 Frank Reed
  10. 2026-01-30 16:05 Joshua Carty
  11. 2026-02-01 21:29 David Pike
  12. 2026-02-02 04:15 Frank Reed

24 Jan 2026 – 02 Feb 2026 : Navigating bush flights in northern Canada and Alaska

  1. 2026-01-24 18:55 Frank Reed
  2. 2026-01-27 18:32 Kevin Stalder
  3. 2026-01-28 12:46 Dave Walden
  4. 2026-01-30 17:35 Stephen Bhatt
  5. 2026-01-30 20:59 Kevin Stalder
  6. 2026-01-30 21:26 Gary LaPook
  7. 2026-01-30 21:32 Gary LaPook
  8. 2026-01-30 21:36 Gary LaPook
  9. 2026-01-31 01:45 Gary LaPook
  10. 2026-01-31 01:52 Gary LaPook
  11. 2026-01-31 02:16 Gary LaPook
  12. 2026-01-31 12:48 Kevin Stalder
  13. 2026-02-02 02:28 Bill Morris
  14. 2026-02-02 16:19 Kevin Stalder

20 Jan 2026 – 03 Feb 2026 : Weems and Plath Celestial Slide Rule

  1. 2026-01-20 23:59 Jim S
  2. 2026-01-22 12:31 Noell Wilson
  3. 2026-01-22 12:46 Noell Wilson
  4. 2026-01-23 17:16 Jim S
  5. 2026-01-23 18:28 Frank Reed
  6. 2026-01-23 20:32 David Pike
  7. 2026-01-24 19:04 Paul Saffo
  8. 2026-01-24 20:16 David Pike
  9. 2026-01-24 22:06 David Pike
  10. 2026-02-01 05:19 Jim S
  11. 2026-02-01 19:13 Jim S
  12. 2026-02-03 03:16 Jim S

26 Jan 2026 – 03 Feb 2026 : USN celestial navigation: interesting news article

  1. 2026-01-26 15:40 Douglas Stephen
  2. 2026-01-26 16:13 Frank Reed
  3. 2026-02-03 18:23 Frank Reed

30 Jan 2026 – 03 Feb 2026 : Re: Ephemerides and Sight Reduction on an HP Prime Calculator

  1. 2026-01-30 14:59 Frank Reed
  2. 2026-01-30 23:41 Charles Vaillancourt
  3. 2026-02-01 14:55 Charles Vaillancourt
  4. 2026-02-03 18:37 Frank Reed

30 Jan 2026 – 03 Feb 2026 : Reed Navigation Modern Celestial workshop

  1. 2026-01-30 17:39 Stephen Bhatt
  2. 2026-02-03 18:51 Frank Reed

09 Feb 2026 – 09 Feb 2026 : GHA Sun: easy this week

  1. 2026-02-09 15:28 Frank Reed

06 Feb 2026 – 09 Feb 2026 : How long does Noon last?

  1. 2026-02-06 00:20 Frank Reed
  2. 2026-02-06 14:10 Joshua Carty
  3. 2026-02-07 18:09 David Pike
  4. 2026-02-08 18:26 Tibor Miseta
  5. 2026-02-09 02:00 David C
  6. 2026-02-09 15:33 David Pike

17 Feb 2026 – 18 Feb 2026 : Pioneering Air Routes

  1. 2026-02-17 16:49 Brian Walton
  2. 2026-02-17 17:08 Frank Reed
  3. 2026-02-17 19:05 Gary LaPook
  4. 2026-02-18 10:45 David Pike
  5. 2026-02-18 11:42 Brian Walton
  6. 2026-02-18 19:18 Paul Saffo

10 Feb 2026 – 18 Feb 2026 : Celestial slide rule demo

  1. 2026-02-10 14:26 Trammell H
  2. 2026-02-10 18:53 Gary LaPook
  3. 2026-02-11 00:02 Brian Walton
  4. 2026-02-14 20:43 Tibor Miseta
  5. 2026-02-18 19:35 Trammell H

11 Feb 2026 – 20 Feb 2026 : Sun Slow Day: February 11

  1. 2026-02-11 02:01 Frank Reed
  2. 2026-02-20 01:04 Roger Puttman

12 Feb 2026 – 21 Feb 2026 : Latitude by Kochab in Pac. Northwest

  1. 2026-02-12 18:48 Joshua Carty
  2. 2026-02-12 20:32 Gary LaPook
  3. 2026-02-12 23:22 David Pike
  4. 2026-02-13 12:16 Geoff Hitchcox
  5. 2026-02-14 10:32 Lars Bergman
  6. 2026-02-14 20:25 David Pike
  7. 2026-02-16 18:47 Frank Reed
  8. 2026-02-18 19:43 Andy Johnson
  9. 2026-02-20 23:31 Joshua Carty
  10. 2026-02-21 01:18 Geoff Hitchcox
  11. 2026-02-21 09:31 Andy Johnson
  12. 2026-02-21 13:10 Jeffrey Rock
  13. 2026-02-21 17:08 Noell Wilson

24 Feb 2026 – 25 Feb 2026 : ADMIN: short NavList outage today

  1. 2026-02-24 17:11 Frank Reed
  2. 2026-02-24 18:06 David Pike
  3. 2026-02-24 18:07 Paul Saffo
  4. 2026-02-25 04:59 Frank Reed
  5. 2026-02-25 06:50 Andrés Ruiz

21 Feb 2026 – 26 Feb 2026 : Compss Adjustment training

  1. 2026-02-21 00:39 Colin B
  2. 2026-02-21 12:15 David Pike
  3. 2026-02-21 15:42 Colin B
  4. 2026-02-21 22:48 David Pike
  5. 2026-02-22 04:57 Gary LaPook
  6. 2026-02-22 05:23 Gary LaPook
  7. 2026-02-22 10:47 Andrés Ruiz
  8. 2026-02-22 11:43 David Pike
  9. 2026-02-26 15:55 Dale Lichtblau
  10. 2026-02-26 20:52 Andrés Ruiz

26 Feb 2026 – 27 Feb 2026 : Sun and Moon in the Arctic

  1. 2026-02-26 14:58 Tom M. Patrick
  2. 2026-02-26 15:11 Frank Reed
  3. 2026-02-26 17:15 Lars Bergman
  4. 2026-02-27 03:34 Geoff Hitchcox
  5. 2026-02-27 04:18 Peter Hakel
  6. 2026-02-27 07:04 Andrés Ruiz
  7. 2026-02-27 09:48 Lars Bergman
  8. 2026-02-27 21:14 Frank Reed

27 Feb 2026 – 28 Feb 2026 : Navigation IFN

  1. 2026-02-27 07:17 Andrés Ruiz
  2. 2026-02-27 09:20 Antoine Couëtte
  3. 2026-02-28 01:23 Gary LaPook

02 Mar 2026 – 02 Mar 2026 : Celestial in the Age of Sail

  1. 2026-03-02 15:50 Frank Reed

03 Mar 2026 – 04 Mar 2026 : Bris sextant (fixed angle sextant sights)

  1. 2026-03-03 00:48 Chris Smith
  2. 2026-03-03 16:21 Chris Smith
  3. 2026-03-04 16:07 Frank Reed
  4. 2026-03-04 18:19 Chris Smith

04 Mar 2026 – 05 Mar 2026 : Broken navigation articles on Wikipedia

  1. 2026-03-04 22:56 Frank Reed
  2. 2026-03-05 09:35 Bill Lionheart

01 Mar 2026 – 05 Mar 2026 : Where to buy sextants

  1. 2026-03-01 23:20 Joshua Carty
  2. 2026-03-01 23:28 Tom M. Patrick
  3. 2026-03-02 01:53 Colin B
  4. 2026-03-02 13:19 Alexandre Eremenko
  5. 2026-03-03 20:08 Paul Hirose
  6. 2026-03-05 19:00 Denis Vannier

02 Mar 2026 – 05 Mar 2026 : Polaris in literature

  1. 2026-03-02 16:03 Andrés Ruiz
  2. 2026-03-04 17:25 Andrés Ruiz
  3. 2026-03-04 21:59 Frank Reed
  4. 2026-03-05 08:38 Andrés Ruiz
  5. 2026-03-05 19:34 Frank Reed

03 Mar 2026 – 06 Mar 2026 : C Plath, Hamburg Sextant For Sale

  1. 2026-03-03 00:34 Paul Mierop
  2. 2026-03-04 14:34 Dale Lichtblau
  3. 2026-03-04 16:34 Frank Reed
  4. 2026-03-04 22:41 Paul Mierop
  5. 2026-03-04 23:07 Frank Reed
  6. 2026-03-06 01:08 Tom H

06 Mar 2026 – 06 Mar 2026 : C.Plath Sextant is no longer for sale

  1. 2026-03-06 18:11 Paul Mierop

08 Mar 2026 – 08 Mar 2026 : Re: Alternate methods for clearing lunars

  1. 2026-03-08 01:30 Wendel Brunner

08 Mar 2026 – 08 Mar 2026 : Re: Lunar distance accuracy with StarPilot

  1. 2026-03-08 02:08 Wendel Brunner

08 Mar 2026 – 09 Mar 2026 : Thomas D. Davies, USN

  1. 2026-03-08 13:30 Noell Wilson
  2. 2026-03-09 13:37 Frank Reed
  3. 2026-03-09 14:12 Noell Wilson

21 Feb 2026 – 10 Mar 2026 : Jupiter and a crescent Moon

  1. 2026-02-21 00:29 Tom M. Patrick
  2. 2026-02-21 12:26 Todd Spath
  3. 2026-03-10 03:08 Wendel Brunner

27 Feb 2026 – 10 Mar 2026 : An Arctic lunar

  1. 2026-02-27 13:27 Lars Bergman
  2. 2026-02-27 17:55 Frank Reed
  3. 2026-03-09 19:08 Modris Fersters
  4. 2026-03-10 12:01 Lars Bergman

11 Mar 2026 – 11 Mar 2026 : Bull ant lunar navigation

  1. 2026-03-11 19:09 Martin Whittle

14 Mar 2026 – 14 Mar 2026 : StarPilot app for iPhone

  1. 2026-03-14 13:49 Bob Bossert
  2. 2026-03-14 17:42 Tom H

17 Mar 2026 – 17 Mar 2026 : Seeking link a12 bubble sextant

  1. 2026-03-17 16:48 Sriram

14 Mar 2026 – 18 Mar 2026 : Davis Prism level

  1. 2026-03-14 16:54 Scott O
  2. 2026-03-18 07:55 Steve Gillion
  3. 2026-03-18 11:56 Ralf C. Kohlrausch
  4. 2026-03-18 18:41 Ralf C. Kohlrausch

18 Mar 2026 – 18 Mar 2026 : Video/lecture: Why are planets spherical?

  1. 2026-03-18 19:10 Bob Crawley

17 Mar 2026 – 18 Mar 2026 : Air navigation bubble sextants

  1. 2026-03-17 13:57 Joshua Carty
  2. 2026-03-17 20:42 David Pike
  3. 2026-03-17 23:32 Howard G
  4. 2026-03-18 01:21 Joe Plazak
  5. 2026-03-18 01:48 Noell Wilson
  6. 2026-03-18 05:07 Gary LaPook
  7. 2026-03-18 10:34 David Pike
  8. 2026-03-18 20:22 Joshua Carty

20 Mar 2026 – 20 Mar 2026 : Re: Universal Plotting Sheet and Weir diagram

  1. 2026-03-20 17:30 Bela Kovacs

21 Mar 2026 – 22 Mar 2026 : Original flat Bygrave link

  1. 2026-03-21 18:31 Robin Stuart
  2. 2026-03-22 08:15 Gary LaPook

17 Mar 2026 – 22 Mar 2026 : ABC longitude calcs and PQR intercept calcs LOPS not lining up

  1. 2026-03-17 15:05 Roger Errington Jr.
  2. 2026-03-19 12:12 Roger Errington Jr.
  3. 2026-03-19 12:53 Frank Reed
  4. 2026-03-19 13:31 Roger Errington Jr.
  5. 2026-03-20 22:43 David C
  6. 2026-03-21 00:26 David C
  7. 2026-03-21 01:08 David C
  8. 2026-03-21 22:35 David C
  9. 2026-03-22 02:58 Frank Reed
  10. 2026-03-22 22:30 Ian Gifford

20 Mar 2026 – 23 Mar 2026 : Equinox today?

  1. 2026-03-20 05:54 Frank Reed
  2. 2026-03-20 06:59 Andrés Ruiz
  3. 2026-03-20 17:16 Paul Saffo
  4. 2026-03-23 11:53 Bela Kovacs

25 Mar 2026 – 25 Mar 2026 : Strasbourg astonomical clock

  1. 2026-03-25 15:26 Trammell H

26 Mar 2026 – 26 Mar 2026 : Updated Bygrave Scales in Postscript

  1. 2026-03-26 15:02 Robin Stuart

17 Mar 2026 – 27 Mar 2026 : Re: Bill Morris' MHR1 reproduction

  1. 2026-03-17 14:09 Steve Gillion
  2. 2026-03-17 15:21 Noell Wilson
  3. 2026-03-20 13:18 Robin Stuart
  4. 2026-03-20 17:44 Robin Stuart
  5. 2026-03-21 11:56 Steve Gillion
  6. 2026-03-21 14:28 Robin Stuart
  7. 2026-03-22 06:03 Brian Walton
  8. 2026-03-24 17:20 Steve Gillion
  9. 2026-03-24 17:35 Steve Gillion
  10. 2026-03-25 10:58 Brian Walton
  11. 2026-03-26 14:41 Robin Stuart
  12. 2026-03-27 13:34 Steve Gillion

26 Mar 2026 – 27 Mar 2026 : Shade safety on Davis 15

  1. 2026-03-26 17:48 Paul O
  2. 2026-03-27 13:46 Joshua Carty
  3. 2026-03-27 13:46 Ralf C. Kohlrausch
  4. 2026-03-27 15:36 Bela Kovacs
  5. 2026-03-27 15:46 Paul O
  6. 2026-03-27 15:48 Paul O
  7. 2026-03-27 15:50 Paul O
  8. 2026-03-27 16:50 Greg Rudzinski

03 Mar 2026 – 01 Apr 2026 : Horizon mirror for 1944 US Navy MKII Sextant

  1. 2026-03-03 13:00 Steven Gardiner
  2. 2026-03-04 16:20 Frank Reed
  3. 2026-03-09 02:11 Steven Gardiner
  4. 2026-03-09 13:24 Frank Reed
  5. 2026-03-09 13:54 Noell Wilson
  6. 2026-03-09 16:50 Steven Gardiner
  7. 2026-03-11 23:19 Todd Spath
  8. 2026-04-01 05:28 Peter Monta

31 Mar 2026 – 03 Apr 2026 : Curta mechanical calculator instructions

  1. 2026-03-31 15:13 Trammell H
  2. 2026-03-31 17:31 Paul Saffo
  3. 2026-04-03 00:09 NavList Visitor

03 Apr 2026 – 03 Apr 2026 : Spring navigation workshops online, Pacific schedule

  1. 2026-04-03 17:55 Frank Reed

03 Apr 2026 – 03 Apr 2026 : Parallax and flying to the Moon...

  1. 2026-04-03 19:18 Frank Reed

03 Apr 2026 – 03 Apr 2026 : The Earth from Artemis... and a Hail Mary

  1. 2026-04-03 20:54 Frank Reed
  2. 2026-04-03 21:16 Frank Reed

06 Apr 2026 – 06 Apr 2026 : Lunar distance and lunar distance

  1. 2026-04-06 17:45 Frank Reed

10 Apr 2026 – 10 Apr 2026 : From space

  1. 2026-04-10 10:43 Dave Walden
  2. 2026-04-10 16:58 Frank Reed

12 Apr 2026 – 13 Apr 2026 : Measuring horizon dip

  1. 2026-04-12 19:30 Shane A
  2. 2026-04-12 20:19 Gary LaPook
  3. 2026-04-13 07:06 Frank Reed
  4. 2026-04-13 14:42 Shane M

15 Apr 2026 – 17 Apr 2026 : Earth, circles, stars...

  1. 2026-04-15 22:53 Frank Reed
  2. 2026-04-17 00:30 David Pike
  3. 2026-04-17 00:36 Joshua Carty
  4. 2026-04-17 11:29 David Pike
  5. 2026-04-17 15:16 David Pike
  6. 2026-04-17 15:54 Frank Reed

17 Apr 2026 – 17 Apr 2026 : Pocket Calculators and Navigation

  1. 2026-04-17 21:00 Luc Desmedt

20 Apr 2026 – 21 Apr 2026 : ADMIN: partial outage

  1. 2026-04-20 21:52 Frank Reed
  2. 2026-04-21 02:05 Frank Reed

03 Apr 2026 – 27 Apr 2026 : Latitude From Two Star Altitudes Only

  1. 2026-04-03 20:30 David Pike
  2. 2026-04-04 06:19 Frank Reed
  3. 2026-04-04 11:41 Lars Bergman
  4. 2026-04-04 12:26 David Pike
  5. 2026-04-04 14:34 David Pike
  6. 2026-04-04 15:55 Frank Reed
  7. 2026-04-04 18:23 Lars Bergman
  8. 2026-04-05 20:17 Ian Staniforth
  9. 2026-04-06 14:52 David Pike
  10. 2026-04-06 16:50 David Pike
  11. 2026-04-06 19:36 Ian Staniforth
  12. 2026-04-07 15:20 Joshua Carty
  13. 2026-04-07 19:17 David Pike
  14. 2026-04-07 20:45 David Pike
  15. 2026-04-09 17:04 Ian Staniforth
  16. 2026-04-09 18:15 David Pike
  17. 2026-04-09 19:53 Frank Reed
  18. 2026-04-10 10:30 Andrés Ruiz
  19. 2026-04-19 22:18 Wendel Brunner
  20. 2026-04-21 13:04 Lars Bergman
  21. 2026-04-26 18:16 Wendel Brunner
  22. 2026-04-26 20:23 Wendel Brunner
  23. 2026-04-27 14:06 Lars Bergman

30 Apr 2026 – 01 May 2026 : Rare sextant ?

  1. 2026-04-30 07:38 Igor S.
  2. 2026-05-01 16:46 Frank Reed
  3. 2026-05-01 17:06 Paul Saffo

22 Apr 2026 – 02 May 2026 : Antique Celestial Navigation Calculator

  1. 2026-04-22 01:46 Joe Plazak
  2. 2026-04-23 22:25 Tom H
  3. 2026-04-24 00:13 Frank Reed
  4. 2026-05-02 17:28 Joe Plazak

26 Mar 2026 – 03 May 2026 : Where are you if you see this sky?

  1. 2026-03-26 22:16 Frank Reed
  2. 2026-03-27 14:40 Roger Errington Jr.
  3. 2026-03-27 15:41 Frank Reed
  4. 2026-03-27 16:31 Roger Errington Jr.
  5. 2026-03-27 21:49 David Pike
  6. 2026-03-28 00:32 Don Seltzer
  7. 2026-03-28 00:52 Frank Reed
  8. 2026-03-28 17:39 David Pike
  9. 2026-03-29 13:11 Frank Reed
  10. 2026-03-30 02:47 Roger Errington Jr.
  11. 2026-03-31 16:18 David Pike
  12. 2026-03-31 16:41 David Pike
  13. 2026-03-31 16:45 Roger Errington Jr.
  14. 2026-03-31 17:59 David Pike
  15. 2026-03-31 22:55 Frank Reed
  16. 2026-04-03 03:19 David C
  17. 2026-04-03 16:57 Frank Reed
  18. 2026-04-03 17:29 Frank Reed
  19. 2026-04-04 03:42 Kevin Stalder
  20. 2026-04-05 16:20 Joshua Carty
  21. 2026-04-05 16:43 Joshua Carty
  22. 2026-04-06 16:32 David Pike
  23. 2026-04-09 19:03 Frank Reed
  24. 2026-04-13 17:32 Joshua Carty
  25. 2026-04-13 22:03 David Pike
  26. 2026-04-14 23:17 David Pike
  27. 2026-04-16 19:07 David Pike
  28. 2026-05-03 16:34 David Pike
  29. 2026-05-03 17:19 Frank Reed
  30. 2026-05-03 17:49 David Pike

04 May 2026 – 04 May 2026 : Lewis & Clarks celestial observations...

  1. 2026-05-04 14:12 Dale Lichtblau
  2. 2026-05-04 15:10 Dale Lichtblau

17 Apr 2026 – 05 May 2026 : Best place to obtain a used sextant

  1. 2026-04-17 12:30 B Pine
  2. 2026-04-17 16:26 Colin B
  3. 2026-04-18 01:33 B Pine
  4. 2026-04-18 14:57 Frank Reed
  5. 2026-04-18 17:20 Jeremy C
  6. 2026-04-18 18:00 B Pine
  7. 2026-04-18 19:57 David Pike
  8. 2026-04-18 22:00 Tom H
  9. 2026-04-18 22:14 Michael Holm
  10. 2026-04-25 01:48 Noell Wilson
  11. 2026-05-05 00:45 Robert VanderPol II

05 May 2026 – 05 May 2026 : Re: Horizon mirror for 1944 US Navy MKII Sextant

  1. 2026-05-05 11:33 Steven Gardiner

30 Apr 2026 – 06 May 2026 : A page of navigation in 1840

  1. 2026-04-30 17:10 Frank Reed
  2. 2026-05-01 00:05 David C
  3. 2026-05-01 00:50 David C
  4. 2026-05-01 01:51 Frank Reed
  5. 2026-05-01 13:28 Lars Bergman
  6. 2026-05-01 17:37 Frank Reed
  7. 2026-05-06 21:14 Noell Wilson

12 May 2026 – 12 May 2026 : 2027 Nautical Almanac, and a question

  1. 2026-05-12 13:18 Rafael C. Caruso
  2. 2026-05-12 14:25 Frank Reed
  3. 2026-05-12 23:07 Rafael C. Caruso

08 May 2026 – 13 May 2026 : Celestial navigation and astro-jewelry

  1. 2026-05-08 03:41 Frank Reed
  2. 2026-05-08 18:42 Gary LaPook
  3. 2026-05-08 18:54 Frank Reed
  4. 2026-05-08 21:30 David Pike
  5. 2026-05-10 04:28 Paul Saffo
  6. 2026-05-10 09:08 David Pike
  7. 2026-05-10 17:47 Ian Gifford
  8. 2026-05-10 19:04 Modris Fersters
  9. 2026-05-10 19:08 Joshua Carty
  10. 2026-05-11 02:20 Frank Reed
  11. 2026-05-11 19:19 Frank Reed
  12. 2026-05-13 16:35 Ian Gifford

19 Apr 2026 – 15 May 2026 : B52 star tracker

  1. 2026-04-19 06:38 Trammell H
  2. 2026-04-20 16:36 Tom H
  3. 2026-04-21 02:23 Gary LaPook
  4. 2026-04-26 15:40 Howard G
  5. 2026-04-26 16:52 Frank Reed
  6. 2026-04-27 00:40 Gary LaPook
  7. 2026-04-27 14:08 Howard G
  8. 2026-04-30 00:10 David Pike
  9. 2026-04-30 05:06 Paul Dolkas
  10. 2026-04-30 13:08 David Pike
  11. 2026-04-30 23:18 David C
  12. 2026-05-01 00:30 Howard G
  13. 2026-05-01 01:33 Gary LaPook
  14. 2026-05-01 15:05 Gary LaPook
  15. 2026-05-02 18:04 Fred Hebard
  16. 2026-05-14 21:37 Frank Reed
  17. 2026-05-14 23:22 David Pike
  18. 2026-05-14 23:46 Don Seltzer
  19. 2026-05-15 03:02 Geoff Hitchcox
  20. 2026-05-15 08:49 David Pike
  21. 2026-05-15 18:05 Gary LaPook

20 May 2026 – 20 May 2026 : Navigation Calculations programming

  1. 2026-05-20 09:31 Andrés Ruiz

22 May 2026 – 22 May 2026 : Calculator Afloat

  1. 2026-05-22 13:01 Andrés Ruiz

22 May 2026 – 23 May 2026 : Thomas R. Metcalf

  1. 2026-05-22 10:09 Andrés Ruiz
  2. 2026-05-23 15:22 Rafael C. Caruso

19 May 2026 – 29 May 2026 : Sun shots

  1. 2026-05-19 02:53 Kelsey Smith
  2. 2026-05-19 13:59 Andrés Ruiz
  3. 2026-05-19 15:00 Joshua Carty
  4. 2026-05-19 22:38 Geoff Hitchcox
  5. 2026-05-20 07:29 Antoine Couëtte
  6. 2026-05-22 01:28 Rafael C. Caruso
  7. 2026-05-29 17:05 Daniel Loewer

31 May 2026 – 31 May 2026 : Sextants in Bounty movies...

  1. 2026-05-31 20:02 Frank Reed

06 Jun 2026 – 06 Jun 2026 : Japanese Navy navigator with sextant

  1. 2026-06-06 18:31 Frank Reed

05 Jun 2026 – 06 Jun 2026 : An interesting video on GPS jamming

  1. 2026-06-05 17:39 Alexandre Eremenko
  2. 2026-06-06 17:15 Frank Reed
  3. 2026-06-06 18:59 Daniel Loewer

02 Jun 2026 – 07 Jun 2026 : Latitude by leaps and bounds

  1. 2026-06-02 03:00 Frank Reed
  2. 2026-06-02 15:27 Joshua Carty
  3. 2026-06-02 16:33 Tom M. Patrick
  4. 2026-06-02 21:12 David Pike
  5. 2026-06-02 22:44 Don Seltzer
  6. 2026-06-02 23:13 David Pike
  7. 2026-06-03 12:11 David Pike
  8. 2026-06-04 06:27 Joshua Carty
  9. 2026-06-04 08:06 David Pike
  10. 2026-06-05 18:36 Tom M. Patrick
  11. 2026-06-05 21:01 Don Seltzer
  12. 2026-06-05 21:45 David Pike
  13. 2026-06-06 18:05 Frank Reed
  14. 2026-06-06 18:13 Frank Reed
  15. 2026-06-06 21:53 NavList Visitor
  16. 2026-06-06 22:12 Don Seltzer
  17. 2026-06-07 06:22 Frank Reed

06 Jun 2026 – 07 Jun 2026 : Estimate aircraft altitude by celestial parameter

  1. 2026-06-06 18:52 Frank Reed
  2. 2026-06-06 23:56 David Pike
  3. 2026-06-07 17:38 Matus Tejiscak

08 Jun 2026 – 08 Jun 2026 : GPS Anti Spoof latest version

  1. 2026-06-08 05:00 Frank Reed

31 May 2026 – 11 Jun 2026 : Venus and Jupiter coincidences and more...

  1. 2026-05-31 19:08 Frank Reed
  2. 2026-06-11 08:44 Martin Whittle

11 Jun 2026 – 12 Jun 2026 : Venus and Sun: where am I?

  1. 2026-06-11 17:58 Joshua Carty
  2. 2026-06-11 20:19 Lars Bergman
  3. 2026-06-12 01:16 Geoff Hitchcox

26 May 2026 – 15 Jun 2026 : Traditional Wayfinding

  1. 2026-05-26 07:51 Brian Walton
  2. 2026-05-27 17:06 Paul Saffo
  3. 2026-05-27 23:30 David Pike
  4. 2026-05-29 08:11 Brian Walton
  5. 2026-06-11 17:36 Noell Wilson
  6. 2026-06-15 03:40 Brian Walton

14 Jun 2026 – 17 Jun 2026 : Moon occ Venus Wednesday (North America)

  1. 2026-06-14 22:50 Frank Reed
  2. 2026-06-15 13:06 Alexandre Eremenko
  3. 2026-06-15 20:18 Frank Reed
  4. 2026-06-16 00:09 Alexandre Eremenko
  5. 2026-06-16 21:12 Frank Reed
  6. 2026-06-17 15:26 Alexandre Eremenko
  7. 2026-06-17 16:08 Frank Reed
  8. 2026-06-17 16:25 Frank Reed
  9. 2026-06-17 19:13 Frank Reed

17 Jun 2026 – 17 Jun 2026 : Venus and Moon easy in binoculars

  1. 2026-06-17 17:53 Frank Reed
  2. 2026-06-17 17:59 Joshua Carty
  3. 2026-06-17 22:06 Joshua Carty

19 Jun 2026 – 20 Jun 2026 : Now where are we?

  1. 2026-06-19 21:52 David Pike
  2. 2026-06-20 06:55 Lawrie Elms
  3. 2026-06-20 08:08 David Pike
  4. 2026-06-20 19:20 Frank Reed

19 Jun 2026 – 20 Jun 2026 : Celestial navigation in the oasis

  1. 2026-06-19 06:36 Frank Reed
  2. 2026-06-19 16:10 Geoff Hitchcox
  3. 2026-06-19 20:08 Joshua Carty
  4. 2026-06-20 20:24 Geoff Hitchcox
  5. 2026-06-20 21:31 Frank Reed

21 Jun 2026 – 21 Jun 2026 : The Secant Time Sight

  1. 2026-06-21 02:30 Joe Plazak

21 Jun 2026 – 23 Jun 2026 : Thousands celebrate summer solstice as 37C heatwave looms in UK

  1. 2026-06-21 11:13 David Pike
  2. 2026-06-21 12:07 David Pike
  3. 2026-06-23 13:23 Dave Walden

27 Jun 2026 – 27 Jun 2026 : Oh no! Not more AE

  1. 2026-06-27 10:15 David Pike
  2. 2026-06-27 19:13 Frank Reed
  3. 2026-06-27 23:00 Drago Simac

27 Jun 2026 – 29 Jun 2026 : A kamal by any other name

  1. 2026-06-27 19:04 Frank Reed
  2. 2026-06-28 18:06 Bob Peterson
  3. 2026-06-29 15:22 Frank Reed
  4. 2026-06-29 20:45 Greg Rudzinski

30 Jun 2026 – 30 Jun 2026 : Latitude by photo star trails

  1. 2026-06-30 02:29 Frank Reed
  2. 2026-06-30 03:08 Frank Reed

28 Jun 2026 – 02 Jul 2026 : Polaris and Sun Brain Puzzle

  1. 2026-06-28 13:12 Joshua Carty
  2. 2026-06-28 18:12 NavList Visitor
  3. 2026-06-29 01:16 Patrick Twohy
  4. 2026-06-29 07:04 Patrick Twohy
  5. 2026-06-29 08:51 Ross Henderson
  6. 2026-06-29 16:02 Stephen Bhatt
  7. 2026-06-29 17:33 Patrick Twohy
  8. 2026-06-29 20:57 Greg Rudzinski
  9. 2026-06-30 01:57 Joshua Carty
  10. 2026-07-01 12:52 NavList Visitor
  11. 2026-07-02 18:28 Joshua Carty

04 Jul 2026 – 04 Jul 2026 : Practical Calculators for Navigation

  1. 2026-07-04 16:23 Wendel Brunner

04 Jul 2026 – 04 Jul 2026 : Logarithms in literature in 1854

  1. 2026-07-04 23:34 Frank Reed

04 Jul 2026 – 06 Jul 2026 : Polhemus analog celestial computer on ebay

  1. 2026-07-04 17:53 Frank Reed
  2. 2026-07-05 00:27 Daniel Loewer
  3. 2026-07-05 03:38 Frank Reed
  4. 2026-07-05 10:19 David Pike
  5. 2026-07-06 05:37 Gary LaPook

01 Jul 2026 – 07 Jul 2026 : Geocentric Orrery

  1. 2026-07-01 16:19 Trammell H
  2. 2026-07-01 18:25 Alexandre Eremenko
  3. 2026-07-02 09:39 Trammell H
  4. 2026-07-07 06:12 Theo Honohan
  5. 2026-07-07 14:14 Ken Muldrew

08 Jul 2026 – 08 Jul 2026 : American Air Almanac "Orrery"

  1. 2026-07-08 23:58 Frank Reed

09 Jul 2026 – 09 Jul 2026 : Artist for the Plath Man?

  1. 2026-07-09 15:05 Frank Reed

10 Jul 2026 – 10 Jul 2026 : Google Earth : Death by Indifference

  1. 2026-07-10 00:31 Frank Reed

30 Jun 2026 – 10 Jul 2026 : GPS Spoofing

  1. 2026-06-30 18:12 Bob Peterson
  2. 2026-07-09 13:40 Bob Peterson
  3. 2026-07-10 00:53 Frank Reed
  4. 2026-07-10 02:44 Paul Saffo

05 Jul 2026 – 10 Jul 2026 : Operation Eagle Hawk

  1. 2026-07-05 13:27 David Pike
  2. 2026-07-06 23:22 Frank Reed
  3. 2026-07-10 19:01 Gary LaPook

09 Jul 2026 – 10 Jul 2026 : Lord Kelvin, lunars, and Tripos comedy

  1. 2026-07-09 22:03 Frank Reed
  2. 2026-07-10 03:41 Alexandre Eremenko
  3. 2026-07-10 05:53 Frank Reed
  4. 2026-07-10 14:20 Alexandre Eremenko
  5. 2026-07-10 15:49 Alexandre Eremenko
  6. 2026-07-10 17:31 Frank Reed
  7. 2026-07-10 18:48 Robert H. van Gent
  8. 2026-07-10 18:51 Paul Saffo
  9. 2026-07-10 19:52 Frank Reed
  10. 2026-07-10 20:38 NavList Visitor

11 Jul 2026 – 12 Jul 2026 : Kelvin, Tripos, rope and almanac

  1. 2026-07-11 15:42 Alexandre Eremenko
  2. 2026-07-11 19:30 Frank Reed
  3. 2026-07-12 15:05 Alexandre Eremenko

30 Jun 2026 – 16 Jul 2026 : Two Sun and Noon Sun Brain Puzzle

  1. 2026-06-30 05:11 Joshua Carty
  2. 2026-06-30 14:15 Greg Rudzinski
  3. 2026-07-01 15:25 Joshua Carty
  4. 2026-07-01 23:12 Patrick Twohy
  5. 2026-07-05 16:55 Stephen Bhatt
  6. 2026-07-06 23:45 Frank Reed
  7. 2026-07-16 23:47 Joshua Carty

16 Jul 2026 – 16 Jul 2026 : De synchronizing from solar time

  1. 2026-07-16 15:31 Bob Goethe
  2. 2026-07-16 23:51 Joshua Carty

12 Jul 2026 – 17 Jul 2026 : Twilight plan implies position

  1. 2026-07-12 20:15 Frank Reed
  2. 2026-07-12 21:53 David Pike
  3. 2026-07-13 10:29 David Pike
  4. 2026-07-16 23:55 Joshua Carty
  5. 2026-07-17 14:41 David Pike
  6. 2026-07-17 15:47 Joshua Carty
  7. 2026-07-17 16:38 David Pike

19 Jul 2026 – 20 Jul 2026 : Integer-only celestial navigation in C99

  1. 2026-07-19 23:28 Nenad Micic
  2. 2026-07-20 13:17 Frank Reed
  3. 2026-07-20 22:20 Nenad Micic

19 Jul 2026 – 21 Jul 2026 : Tripos Test for the Twenty-first Century

  1. 2026-07-19 23:59 Frank Reed
  2. 2026-07-20 17:19 Joshua Carty
  3. 2026-07-20 18:04 Frank Reed
  4. 2026-07-21 05:22 Don Seltzer
  5. 2026-07-21 10:56 David Pike
  6. 2026-07-21 13:14 David Pike
  7. 2026-07-21 16:42 David Pike
  8. 2026-07-21 18:43 David Pike
  9. 2026-07-21 20:02 David Pike
  10. 2026-07-21 20:37 Frank Reed

21 Jul 2026 – 24 Jul 2026 : Stellarium for Celestial Practice

  1. 2026-07-21 15:58 Brooke A
  2. 2026-07-21 22:44 Homer Smith
  3. 2026-07-23 15:04 Brooke A
  4. 2026-07-24 04:43 Homer Smith
  5. 2026-07-24 16:58 Joshua Carty

25 Jul 2026 – 25 Jul 2026 : Stellarium for noon site exercise

  1. 2026-07-25 14:39 Ross Henderson

26 Jul 2026 – 26 Jul 2026 : Selling a whaling museum

  1. 2026-07-26 01:16 Frank Reed

12 Jul 2026 – 26 Jul 2026 : Thank you, Frank

  1. 2026-07-12 10:02 Matus Tejiscak
  2. 2026-07-16 23:59 Joshua Carty
  3. 2026-07-20 17:55 Frank Reed
  4. 2026-07-26 01:22 Wayne White

27 Jul 2026 – 29 Jul 2026 : Earhart expedition

  1. 2026-07-27 15:55 Alexandre Eremenko
  2. 2026-07-27 18:59 Gary LaPook
  3. 2026-07-29 02:55 Howard G
  4. 2026-07-29 13:46 David Pike

22 Jul 2026 – 31 Jul 2026 : Astron and Slide Rule Emulators

  1. 2026-07-22 21:57 Bill Ritchie
  2. 2026-07-22 22:54 Frank Reed
  3. 2026-07-23 06:18 Ross Henderson
  4. 2026-07-25 14:28 Frank Reed
  5. 2026-07-31 20:13 Frank Reed

10 Jul 2026 – 02 Aug 2026 : Cook, Lunars, Almanac vs British Mariner's Guide

  1. 2026-07-10 19:26 Modris Fersters
  2. 2026-07-10 19:33 Paul Quincey
  3. 2026-08-02 16:14 Modris Fersters

03 Aug 2026 – 04 Aug 2026 : "Using the streamlined ABC algorithm"

  1. 2026-08-03 23:43 Jacquelin Hardy
  2. 2026-08-04 00:36 Frank Reed
  3. 2026-08-04 15:25 Jacquelin Hardy

03 Aug 2026 – 04 Aug 2026 : Celestial Failure

  1. 2026-08-03 16:44 Joshua Carty
  2. 2026-08-03 19:24 David Pike
  3. 2026-08-03 20:57 Patrick Twohy
  4. 2026-08-03 21:11 Frank Reed
  5. 2026-08-03 22:16 David Pike
  6. 2026-08-03 22:53 Joshua Carty
  7. 2026-08-04 00:35 Patrick Twohy
  8. 2026-08-04 22:07 David Pike

28 Jul 2026 – 05 Aug 2026 : Where in the World is SV San Diego?

  1. 2026-07-28 16:59 Joshua Carty
  2. 2026-07-28 17:42 Frank Reed
  3. 2026-07-28 20:13 Lars Bergman
  4. 2026-07-28 22:01 Geoff Hitchcox
  5. 2026-07-29 13:43 David Pike
  6. 2026-07-29 15:45 David Pike
  7. 2026-07-29 23:33 Patrick Twohy
  8. 2026-07-30 09:36 David Pike
  9. 2026-07-30 16:50 Joshua Carty
  10. 2026-07-30 21:11 Lars Bergman
  11. 2026-07-30 23:14 Geoff Hitchcox
  12. 2026-07-31 08:16 Antoine Couëtte
  13. 2026-07-31 23:58 Frank Reed
  14. 2026-08-01 21:01 Geoff Hitchcox
  15. 2026-08-05 18:43 Frank Reed

05 Aug 2026 – 08 Aug 2026 : Ebbco sextant filter replacement

  1. 2026-08-05 21:13 P. Llina
  2. 2026-08-06 19:17 Greg Rudzinski
  3. 2026-08-08 21:12 Noell Wilson

07 Aug 2026 – 08 Aug 2026 : DR position and artificial horizon

  1. 2026-08-07 23:23 Paul O
  2. 2026-08-08 23:33 Frank Reed

09 Aug 2026 – 09 Aug 2026 : Navigation Spreadsheets in 2027

  1. 2026-08-09 20:58 Peter Hakel

05 Aug 2026 – 10 Aug 2026 : Venus in daylight

  1. 2026-08-05 22:23 Frank Reed
  2. 2026-08-05 23:43 Jacquelin Hardy
  3. 2026-08-09 16:55 Linda Mestas
  4. 2026-08-09 19:34 Jacquelin Hardy
  5. 2026-08-09 19:45 Linda Mestas
  6. 2026-08-10 15:10 Jacquelin Hardy

11 Aug 2026 – 12 Aug 2026 : Me, a whaleship, and the "It Girl"...

  1. 2026-08-11 21:00 Frank Reed
  2. 2026-08-12 08:53 David Pike

09 Aug 2026 – 12 Aug 2026 : Solar eclipse 12 aug 2026

  1. 2026-08-09 18:25 Frank Reed
  2. 2026-08-12 18:57 Frank Reed

10 Aug 2026 – 12 Aug 2026 : Riddle of the Secant

  1. 2026-08-10 18:22 Jacquelin Hardy
  2. 2026-08-10 20:13 David Pike
  3. 2026-08-10 20:40 Frank Reed
  4. 2026-08-10 21:10 Don Seltzer
  5. 2026-08-10 21:26 Jacquelin Hardy
  6. 2026-08-10 22:51 David Pike
  7. 2026-08-11 02:10 Jacquelin Hardy
  8. 2026-08-11 19:25 Brian Walton
  9. 2026-08-12 08:59 David Pike
  10. 2026-08-12 21:12 Jacquelin Hardy

11 Aug 2026 – 13 Aug 2026 : Ocean UTC Celestial Backup - a small prototype

  1. 2026-08-11 14:31 Knut Steinar Fremme
  2. 2026-08-12 06:56 Huub Robroek
  3. 2026-08-13 00:23 Knut Steinar Fremme

13 Aug 2026 – 13 Aug 2026 : Sad to say...

  1. 2026-08-13 16:17 Andrés Ruiz
  2. 2026-08-13 17:09 Greg Rudzinski

13 Aug 2026 – 14 Aug 2026 : Antoine (Kermit) Couette

  1. 2026-08-13 11:18 Dave Walden
  2. 2026-08-13 17:35 Dave Walden
  3. 2026-08-13 19:55 Huub Robroek
  4. 2026-08-14 00:21 Peter Hakel
  5. 2026-08-14 05:48 Brian Walton
  6. 2026-08-14 06:13 Gary LaPook
  7. 2026-08-14 06:33 Gary LaPook

14 Aug 2026 – 14 Aug 2026 : Tamaya 1712 [FAKE sextant]

  1. 2026-08-14 16:13 Colin B
  2. 2026-08-14 16:43 Frank Reed
  3. 2026-08-14 17:23 David Pike
  4. 2026-08-14 18:07 Frank Reed
  5. 2026-08-14 22:15 David Pike

12 Aug 2026 – 19 Aug 2026 : What brand of box sextant is this?

  1. 2026-08-12 16:45 Michalis Vaidanis
  2. 2026-08-18 21:22 Noell Wilson
  3. 2026-08-19 13:58 Ralf C. Kohlrausch

13 Aug 2026 – 20 Aug 2026 : PCastrolabe software/app

  1. 2026-08-13 22:34 Jacquelin Hardy
  2. 2026-08-14 07:11 Linda Mestas
  3. 2026-08-14 15:59 Jacquelin Hardy
  4. 2026-08-14 20:18 NavList Visitor
  5. 2026-08-17 00:51 Frank Reed
  6. 2026-08-19 11:09 Andy Howse
  7. 2026-08-19 15:58 Jacquelin Hardy
  8. 2026-08-19 21:33 Jacquelin Hardy
  9. 2026-08-20 20:43 Frank Reed

08 Aug 2026 – 22 Aug 2026 : Long term almanac

  1. 2026-08-08 01:03 Jacquelin Hardy
  2. 2026-08-08 20:22 Jacquelin Hardy
  3. 2026-08-08 23:18 Frank Reed
  4. 2026-08-09 16:29 Frank Reed
  5. 2026-08-13 00:09 Jacquelin Hardy
  6. 2026-08-16 20:45 Jacquelin Hardy
  7. 2026-08-17 22:23 Paul Hirose
  8. 2026-08-18 20:16 Jacquelin Hardy
  9. 2026-08-22 23:56 Joshua Carty

23 Aug 2026 – 23 Aug 2026 : An A.I.-aided Navigation Spreadsheet

  1. 2026-08-23 15:55 Dustin Baenen

17 Aug 2026 – 23 Aug 2026 : Air navigation 1950s-1980s

  1. 2026-08-17 16:23 Joshua Carty
  2. 2026-08-17 17:14 Art Leung
  3. 2026-08-17 23:20 Howard G
  4. 2026-08-22 23:59 Joshua Carty
  5. 2026-08-23 00:10 Joshua Carty
  6. 2026-08-23 19:15 Art Leung
  7. 2026-08-23 22:55 Howard G

05 Aug 2026 – 25 Aug 2026 : Latitude by Orion ...in Spaaaace!

  1. 2026-08-05 15:24 Frank Reed
  2. 2026-08-06 19:31 Linda Mestas
  3. 2026-08-07 19:28 Joshua Carty
  4. 2026-08-07 21:50 Jacquelin Hardy
  5. 2026-08-08 16:25 Frank Reed
  6. 2026-08-22 23:04 Joshua Carty
  7. 2026-08-25 18:12 Linda Mestas

23 Aug 2026 – 26 Aug 2026 : Eclipses and longitude

  1. 2026-08-23 04:31 Frank Reed
  2. 2026-08-23 15:48 Alexandre Eremenko
  3. 2026-08-24 05:48 Ross Henderson
  4. 2026-08-24 06:44 Ross Henderson
  5. 2026-08-24 11:37 Jacquelin Hardy
  6. 2026-08-24 13:54 Frank Reed
  7. 2026-08-24 20:05 Frank Reed
  8. 2026-08-24 21:35 Lyle Ruppert
  9. 2026-08-24 21:51 Frank Reed
  10. 2026-08-24 21:57 Alexandre Eremenko
  11. 2026-08-24 22:47 Lyle Ruppert
  12. 2026-08-25 00:08 Jacquelin Hardy
  13. 2026-08-25 17:46 Joshua Carty
  14. 2026-08-26 00:04 Jacquelin Hardy
  15. 2026-08-26 12:30 Rafael C. Caruso
  16. 2026-08-26 16:46 Jacquelin Hardy

28 Aug 2026 – 28 Aug 2026 : Lunar eclipse observations?

  1. 2026-08-28 11:57 Joshua Carty
  2. 2026-08-28 16:10 Frank Reed
  3. 2026-08-28 20:35 Dave Walden

28 Aug 2026 – 28 Aug 2026 : Mark 2 Navigators Slide-rule

  1. 2026-08-28 23:17 Patrick Early

24 Aug 2026 – 29 Aug 2026 : Saxby's Spherograph No.4

  1. 2026-08-24 13:25 Robin Stuart
  2. 2026-08-29 03:44 Frank Reed

31 Aug 2026 – 31 Aug 2026 : Waterworld navigation

  1. 2026-08-31 14:45 Frank Reed
  2. 2026-08-31 16:42 Don Seltzer
  3. 2026-08-31 18:41 David Pike
  4. 2026-08-31 19:33 Linda Mestas
  5. 2026-08-31 21:41 David Pike

02 Sep 2026 – 02 Sep 2026 : Satellites for an Ancient Epic

  1. 2026-09-02 11:53 Frank Reed

01 Sep 2026 – 04 Sep 2026 : Astra Vela Pro - a free celestial navigation /DR calculator

  1. 2026-09-01 13:45 François Goldite
  2. 2026-09-02 11:49 Dave Walden
  3. 2026-09-02 15:34 Dave Walden
  4. 2026-09-02 16:23 François Goldite
  5. 2026-09-02 17:56 Dave Walden
  6. 2026-09-02 21:20 François Goldite
  7. 2026-09-03 04:52 Frank Reed
  8. 2026-09-03 13:06 François Goldite
  9. 2026-09-03 20:06 Paul Hirose
  10. 2026-09-04 13:11 Dave Walden
  11. 2026-09-04 14:56 Frank Reed

01 Sep 2026 – 04 Sep 2026 : Artificial horizon

  1. 2026-09-01 10:44 Chris Lamousin
  2. 2026-09-01 15:39 Alexandre Eremenko
  3. 2026-09-02 06:49 Gary LaPook
  4. 2026-09-04 04:48 Paul Hirose
  5. 2026-09-04 11:17 Chris Lamousin
  6. 2026-09-04 15:20 Joshua Carty
  7. 2026-09-04 15:31 Murray Peake

04 Sep 2026 – 04 Sep 2026 : Equal Earth projection

  1. 2026-09-04 19:08 David Pike
  2. 2026-09-04 20:03 Denis Vannier

04 Sep 2026 – 05 Sep 2026 : BBC story on retro tools for astronauts

  1. 2026-09-04 18:58 Don Seltzer
  2. 2026-09-04 19:02 Frank Reed
  3. 2026-09-04 19:33 David Pike
  4. 2026-09-04 19:57 Don Seltzer
  5. 2026-09-05 13:48 Joe Plazak

30 Aug 2026 – 05 Sep 2026 : A beautiful night sky

  1. 2026-08-30 11:57 Trammell H
  2. 2026-08-30 19:23 Jacquelin Hardy
  3. 2026-08-30 22:19 David Pike
  4. 2026-08-31 00:29 Frank Reed
  5. 2026-08-31 05:51 Ross Henderson
  6. 2026-08-31 13:22 David Pike
  7. 2026-08-31 13:32 David Pike
  8. 2026-08-31 13:41 Ross Henderson
  9. 2026-08-31 13:56 Frank Reed
  10. 2026-08-31 18:34 David Pike
  11. 2026-08-31 19:10 Linda Mestas
  12. 2026-08-31 21:29 David Pike
  13. 2026-09-01 08:33 Trammell H
  14. 2026-09-01 13:13 Trammell H
  15. 2026-09-01 15:41 Jacquelin Hardy
  16. 2026-09-05 17:10 Bill Ritchie