Hi Bill, On 28 March 2015 at 18:18, Bill Hawkins <b...@iaxs.net> wrote:
> It's been my experience that local daylight time change criteria are > varied and fluid. > How would a LORAN (or GPS) transmitter set the DST bit for everybody? > This is an interesting problem, and of only 300KBs solution size! LORAN is sufficient to provide location resolution in itself so, there should be some way to carry over the information (alike waas to gps and so forth). http://en.wikipedia.org/wiki/Tz_database http://cs.ucla.edu/~eggert/tz/tz-link.htm -> Network protocols for tz data -> Internet Engineering Task Force... In principle, unlike GPS satellites, you may prioritize in any spare bitstream capacity the information which is relevant to local targets and use some extra bitstream capacity for the complete dataset (say, for a ship client which is navigating among remote locations). Because such information changes very very slowly, even very small bitrates can help plenty. Of course, this is only possible in our modern times because of cheap silicon computing capability! Leap second is a different story, luckily that has a global solution which is geo-independent. F. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.