"Richard B. Gilbert" <rgilber...@comcast.net> writes: >Rob wrote: >> Richard B. Gilbert <rgilber...@comcast.net> wrote: >>> Rob wrote: >>>> Richard B. Gilbert <rgilber...@comcast.net> 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. But there are at least 10 different timezone/DST rules for the USA. How does WWV broadcast them all? _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
