Posted by Jon on October 29, 2007 at 15:00:25 from 199.159.117.116 user Jon.
In Reply to: the signal broadcast from Anthorn posted by Jock on October 26, 2007 at 19:09:42:
The GPS system is also (of necessity) an accurate time source, as are Internet time servers via the NNTP protocol. I leave it to you as to which is more useful at sea . . .