[tz] Utah may drop DST

Marc Lehmann schmorp at schmorp.de
Fri Oct 17 12:17:11 UTC 2014

On Thu, Oct 16, 2014 at 09:15:51AM -0400, random832 at fastmail.us wrote:
> On Thu, Oct 16, 2014, at 08:41, Patrice Scattolin wrote:
> > the correct local time using OTA data like the clocks that derive their 
> The atomic clock radio signal is in UTC. [...] it's centrally located for
> the whole country

With a .us address you are excused to assume there is only "the country"

Anyway, I was curious aboput this statement and checked - it seems the
majority of atomic clock radio signals are, in fact, broadcasting local
time - at least MSF (uk), DCF77 (de), TDF (fr) and JJY (jp) are.

> > To my knowledge that signal doesn't include any TZ info

Most of the signals are defined to be in a certain timezone (which might
be different than the timezone the receiver is in), in the sense that they
usually can switch between two fixed offsets to UTC (e.g. UTC+1 and UTC+2
for DCF77 or TDF), usually with a short warning before a switch, so UTC
can be recovered from these time signals.

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