NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Navigation without Leap Seconds
From: Geoffrey Kolbe
Date: 2008 Apr 18, 13:41 +0100
From: Geoffrey Kolbe
Date: 2008 Apr 18, 13:41 +0100
Frank Reed wrote [NavList 4868] >Suppose I publish a nautical almanac today for the year 2058. >How could I use it correctly for celestial navigation in that year? Adjust >the input time?? Adjust the longitude at the end?? If I wait until 2057 to >publish that almanac, it seems that the best approach would be the one Paul >suggested: fold the longitude difference into the published GHA values. > > -FER Well, my Long Term Almanac is nominally good up to the year 2050 and will actually work OK up until 2060. So this is a very real question for me. I am assuming that if leap seconds are abolished, anyone using my tables - which assume GMT, or UT1 as it is called these days - will know the difference between broadcast time and GMT and use this as a correction to broadcast time. Geoffrey Kolbe --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
