Rob wrote: > Richard B. Gilbert <[email protected]> wrote: >> Rob wrote: >>> Richard B. Gilbert <[email protected]> wrote: >>>> Rob wrote: >>>>> Richard B. Gilbert <[email protected]> wrote: >>>>>> I believe that the O/S vendors supply a file with timezone data. If you >>>>>> have support, you can even get updates from the vendor. Since I can't >>>>>> afford support (I'm retired and a hobbyist) I have to do it by hand. >>>>> As Jan Ceuleers also pointed out, the problem is not at all limited >>>>> to operating systems. Any device that obtains time using NTP and wants >>>>> to display it in local time needs the info. >>>>> This could just as well be a digital clock. >>>> I have a couple of "radio controlled" digital clocks and a wrist watch >>>> that do it automagically. The VLF broadcast from WWVB provides the >>>> necessary info. >>> That cannot be true. It may work for your location, but I'm sure it >>> does not cover the general case under discussion. >> How can it not be true? The time broadcast encodes both the time >> (standard time) and whether or not DST is in effect. Of course it >> doesn't work for those jurisdictions that have chosen to go there own >> way as far as DST is concerned. > > There you go. It works for you, but it does not work in the general case.
I think it works for most people and places. Most of the US switches to/from DST on the same day. I don't know about the rest of the western hemisphere but since I seldom leave the continental U.S. it doesn't really affect me very much. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
