[chriscjcj]

The time code transmitted by WWVB includes two bits to express the state of Daylight Saving Time.

  0 = Standard Time
  1 = DST Ending
  2 = DST in effect
  3 = DST Beginning

https://en.wikipedia.org/wiki/WWVB#/media/File:WWVB_time_cod...

https://en.wikipedia.org/wiki/WWVB

[creeble]

which also means that it is one more bit to set on the receiver (in addition to time zone).

I have many clocks with WWVB time. Many miss signals and become off, one even gets an error once in a while and has the time many hours off. Not all decoders are the same apparently.