Roedy Green wrote: > On Sun, 01 Jul 2007 17:47:36 +0100, Martin Gregorie > <[EMAIL PROTECTED]> wrote, quoted or indirectly quoted > someone who said : > >> GPS time is UTC time and I'd assume the same is true for Loran. > > not according to this site that has clocks running on all three. > They are out slightly. > > http://www.leapsecond.com/java/gpsclock.htm > A useful reference: thanks. Interesting that GPS and Loran are slightly out from Zulu. I'll ask round and see if this is something that ATP pilots are aware of: as a glider pilot and GPS user I'd never heard of it. So far the deviations from UTC are probably not enough to affect navigation significantly, but I wonder if banks using networks that timestamp transactions with GPS time know about it. Of course the deviation can't affect disputes where the timestamps are being used to decide event sequences within a single network. However, there could be legal implications if absolute time is important or if the timestamps are being compared across different networks, e.g SWIFT vs CHAPS or Fedwire.
-- martin@ | Martin Gregorie gregorie. | Essex, UK org | -- http://mail.python.org/mailman/listinfo/python-list
