Hi Andy, No, there's nothing about 0200Z. Correct, WWVB doesn't know your local zone.
WWVB itself doesn't "switch" to/from DST. It always only transmits UTC. It is up to your receiver-clock to translate UTC to local time for the user display. This is why most of WWVB radio controlled clocks have a little PMCE (Pacific / Mountain / Central / Eastern) switch. The WWVB data format also includes bits which announce if DST change will occur. It is up to the receiver-clock to decode these bits and make the 1 hour adjustment at the appropriate time (usually 2 am local time). See also: https://en.wikipedia.org/wiki/WWVB http://tf.nist.gov/general/pdf/2422.pdf http://www.nist.gov/pml/div688/grp40/radioclocks.cfm /tvb ----- Original Message ----- From: "Andy" <[email protected]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Sunday, March 13, 2016 7:21 PM Subject: Re: [time-nuts] When does NIST change to DST? > I wonder if WWVB switches to DST around 0200Z, maybe? Since it can't > tell where your local zone is. > > Andy > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
