NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Ut=Gmt?
From: Peter Hakel
Date: 2010 Mar 26, 08:40 -0700
From: Peter Hakel
Date: 2010 Mar 26, 08:40 -0700
The almanacs today consistently use the term Universal Time (UT) to tabulate data. Older ones use the label GMT (Greenwich Mean Time). I know that "a rose by any other name..." but what do NavList members think of this terminology?
Peter Hakel
P.S. Here is what Meeus writes in Chapter 10 of his Astronomical Algorithms:
Universal Time is erroneously called "Greenwich Mean Time" in Great Britain and by most navigators. ... It is the civil time which begins at midnight, so GMT and UT differ by twelve hours.
Peter Hakel
P.S. Here is what Meeus writes in Chapter 10 of his Astronomical Algorithms:
Universal Time is erroneously called "Greenwich Mean Time" in Great Britain and by most navigators. ... It is the civil time which begins at midnight, so GMT and UT differ by twelve hours.
