Navigation Chronology

A community-edited collection of navigation-related events throughout history. No claim is made regarding quality or accuracy. This is based on some original notes by Ed Popko.

Edit at will. Review earlier versions below. Note: at this time, no effort is made to prevent simultaneous editing. If you make edits, and they don't appear, please check one of the prior versions. You can always copy and paste later.


Brief Description of Your Edit:

All versions (chrono.txt is current version):
chrono 29-Jun-18 04-35-56 AM 1614 Napier publishes first publishes logarithms.txt
chrono 28-Jun-18 07-04-23 AM Morse telegraph and USNO time signals.txt
chrono 24-Jun-18 12-59-18 PM Bygrave cylinder sight reduction calculator.txt
chrono 24-Jun-18 01-37-00 PM.txt
chrono 23-Jun-18 09-32-30 AM Smartphone GPS invention.txt
chrono 23-Jun-18 09-24-38 AM Innovations leading up to GPS.txt
chrono 23-Jun-18 08-59-00 AM 1571 Digges invents Theodolite.txt
chrono 20-Jul-18 11-46-09 AM 1850 US adopts Greenwich Meridian for nautical purposes.txt
chrono 19-Jun-18 01-19-33 PM Kollsman's 1930 altimiter patent.txt
chrono 17-Jun-18 04-04-06 AM First leap second introduced.txt
chrono 17-Jun-18 04-00-54 AM Planospheric star finder patented.txt
chrono 17-Jun-18 04-00-11 AM Sputnick launched.txt
chrono 17-Jun-18 03-59-31 AM Kollsman Barometric Altimeter.txt
chrono 14-Jun-18 04-22-08 AM.txt
chrono 11-Jun-18 06-37-45 AM Deleted test line at 1523.txt
chrono 10-Jun-18 12-44-49 PM Testing modified note at 1523.txt
chrono 10-Jun-18 12-23-26 PM Added note at 1523.txt
chrono 10-Jun-18 12-20-07 PM test.txt
chrono 10-Jun-18 11-50-49 AM.txt
chrono 10-Jun-18 11-14-37 AM.txt
chrono 10-Jun-18 11-14-20 AM.txt
chrono 10-Jun-18 11-13-04 AM.txt
chrono 10-Jun-18 09-04-41 AM.txt
chrono 10-Jun-18 09-00-55 AM.txt
chrono 10-Jun-18 08-51-10 AM.txt
chrono 10-Jul-18 03-40-09 AM.txt
chrono 10-Jul-18 03-39-42 AM 1875 Saint-Hilair.txt
chrono 06-Jul-18 05-52-27 AM 1935 Wheems patent for second setting watch.txt
chrono 04-Oct-19 01-31-33 AM typo.txt
chrono 04-Jul-18 06-04-39 PM 2000 GPS SA turned off update.txt
chrono 03-Aug-18 11-06-46 AM Events in evolution of GPS sources from Richard Easton.txt
chrono 03-Aug-18 04-03-48 AM Small spelling fixes.txt
chrono 02-Jul-18 02-37-29 PM USNO Launches CelNav data web site.txt