Groups > linux.debian.user > #198592

Re: What time is it, really?

From	David Wright <deblis@lionunicorn.co.uk>
Newsgroups	linux.debian.user
Subject	Re: What time is it, really?
Date	2018-08-10 21:50 +0200
Message-ID	<wllA5-47r-1@gated-at.bofh.it> (permalink)
References	(4 earlier) <wkY0N-6Xz-5@gated-at.bofh.it> <wkZ6y-7BJ-3@gated-at.bofh.it> <wl0OZ-ht-3@gated-at.bofh.it> <wlhmN-1ME-1@gated-at.bofh.it> <wlhG9-1Sk-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Fri 10 Aug 2018 at 11:32:35 (-0400), Michael Stone wrote:
> On Fri, Aug 10, 2018 at 10:18:19AM -0500, David Wright wrote:
> >Currently we have a consumer radio clock which is a source of mystery
> >to me twice a year: the DST change occurs in the early evening on
> >Saturday instead of Sunday morning.
> 
> The clock isn't properly decoding the DST bits. See
> https://en.wikipedia.org/wiki/WWVB
[…]
> Your clock is probably only looking at the first bit, and skipping
> the logic for when to actually apply the change. A lot of the
> functionality in the time code actually allows for relatively
> graceful degradation like this to facilitate simpler or more complex
> receivers.

Ah, that makes sense. So the different time of the change (which meant
I didn't remember precisely what time it happened) is because of the
varying offset (5, 6 hours) in spring and autumn, and a delay after
that hour o'clock would likely indicate varying signal strength and
lapses in reliable code detection. Now I know what's happening, I can
watch for the latter. Being a dial clock, there's no signal strength
indicator. Our LCD clock does display it approximately, but that only
understands MSF, not WWVB, so it's now free-running (remarkably well
especially since the Low Battery warning has been flashing since
before Christmas).

Cheers,
David.

Thread

What time is it, really? Fred <fred@blakemfg.com> - 2018-08-09 16:40 +0200
  Re: What time is it, really? Martin <keine-eile@online.de> - 2018-08-09 16:40 +0200
  Re: What time is it, really? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-08-09 16:40 +0200
    Re: What time is it, really? Jim Popovitch <jim@k4vqc.com> - 2018-08-09 17:00 +0200
      Re: What time is it, really? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-08-09 17:10 +0200
        Re: What time is it, really? Jim Popovitch <jim@k4vqc.com> - 2018-08-09 17:10 +0200
        Re: What time is it, really? john doe <johndoe65534@mail.com> - 2018-08-09 20:40 +0200
          Re: What time is it, really? Brian <ad44@cityscape.co.uk> - 2018-08-09 21:50 +0200
            Re: What time is it, really? Fred <fred@blakemfg.com> - 2018-08-09 23:40 +0200
              Re: What time is it, really? Shea Alterio <krusete@gmail.com> - 2018-08-10 00:00 +0200
              Re: What time is it, really? David Wright <deblis@lionunicorn.co.uk> - 2018-08-10 17:20 +0200
                Re: What time is it, really? Michael Stone <mstone@debian.org> - 2018-08-10 17:40 +0200
                Re: What time is it, really? David Wright <deblis@lionunicorn.co.uk> - 2018-08-10 21:50 +0200
                Re: What time is it, really? Fred <fred@blakemfg.com> - 2018-08-10 18:40 +0200
                Re: What time is it, really? Brian <ad44@cityscape.co.uk> - 2018-08-10 19:50 +0200
                Re: What time is it, really? Fekete Tamás <fektom@gmail.com> - 2018-08-10 19:50 +0200
                Re: What time is it, really? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-08-10 20:10 +0200
                Re: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-10 20:20 +0200
                Re: What time is it, really? Michael Stone <mstone@debian.org> - 2018-08-10 23:00 +0200
                Re: What time is it, really? Fekete Tamás <fektom@gmail.com> - 2018-08-11 11:10 +0200
                Re: What time is it, really? David Wright <deblis@lionunicorn.co.uk> - 2018-08-10 22:40 +0200
    Re: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-09 17:10 +0200
    Re: What time is it, really? Darac Marjal <mailinglist@darac.org.uk> - 2018-08-09 17:20 +0200
      Re: What time is it, really? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-08-09 18:00 +0200
        Re: What time is it, really? Andre Majorel <aym-naibed@teaser.fr> - 2018-08-09 19:10 +0200
        Re: What time is it, really? Nicolas George <george@nsup.org> - 2018-08-09 19:20 +0200
        Re: What time is it, really? Michael Stone <mstone@debian.org> - 2018-08-09 20:00 +0200
    Re: What time is it, really? deloptes <deloptes@gmail.com> - 2018-08-10 01:30 +0200
  Re: What time is it, really? Nicolas George <george@nsup.org> - 2018-08-09 16:50 +0200
    OT: What time is it, really? Martin <keine-eile@online.de> - 2018-08-09 17:10 +0200
      Re: OT: What time is it, really? Martin <keine-eile@online.de> - 2018-08-09 17:20 +0200
        Re: OT: What time is it, really? Nicolas George <george@nsup.org> - 2018-08-09 17:50 +0200
          Re: OT: What time is it, really? Martin <keine-eile@online.de> - 2018-08-09 18:10 +0200
        Re: OT: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-09 18:20 +0200
          Re: OT: What time is it, really? Martin <keine-eile@online.de> - 2018-08-09 18:30 +0200
            Re: OT: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-09 19:40 +0200
              Re: OT: What time is it, really? Anders Andersson <pipatron@gmail.com> - 2018-08-10 12:00 +0200
                Re: OT: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-10 13:50 +0200
      Re: OT: What time is it, really? Nicolas George <george@nsup.org> - 2018-08-09 17:20 +0200
    Re: What time is it, really? Fred <fred@blakemfg.com> - 2018-08-09 18:50 +0200
      Re: What time is it, really? Nicolas George <george@nsup.org> - 2018-08-09 19:00 +0200
      Re: What time is it, really? Greg Wooledge <wooledg@eeg.ccf.org> - 2018-08-09 19:00 +0200
      Re: What time is it, really? Michael Stone <mstone@debian.org> - 2018-08-09 20:00 +0200
  Re: What time is it, really? Gene Heskett <gheskett@shentel.net> - 2018-08-09 16:50 +0200

csiph-web