tshoppa at gmail.com
Fri May 12 06:33:22 EDT 2017
I was observing a consistent 5-second discrepancy between real time (GPS,
WWV, and NTP sources were checked) and time.gov web page last night.
Round-trip web request/response time between me and time.gov is less than
This morning it is working fine.
Note that whenever I drive by the Naval Observatory I try to at least
glance at my watch and compare it to the big clock too :-). Occasionally
their LED clock on Mass Ave is off.
On Thu, May 11, 2017 at 6:09 PM, Donald E. Pauly <trojancowboy at gmail.com>
> About 10 years ago, I checked my WWVB time code receiver that I built
> against time.gov and it was within 0.1 seconds. That was as close as
> the eyeball can tell. You report a huge error and if confirmed, you
> should complain. I would double check against WWV since WWVB is now
> worthless for time comparison. That webpage is supposed to be
> compensated for network delay within 0.1 second.
> Just now at 15:00:00 MST I checked my phone with time.gov on wireless
> versus a full size computer also on wireless. I momentarily saw the
> phone 65 seconds ahead of the computer. After hitting refresh and
> going off wireless and directly to my carrier, the phone matched the
> computer. I had a witness but cannot get the problem to reappear. I
> don't know exactly why the problem went away. Some servers may cache
> web pages so refresh may be necessary.
> ---------- Forwarded message ----------
> From: Jerry Hancock <jerry at hanler.com>
> Date: Thu, May 11, 2017 at 2:36 PM
> Subject: [time-nuts] time.gov
> To: Discussion of precise time and frequency measurement <
> time-nuts at febo.com>
> I went to time.gov today as I was sitting away from my lab when a new
> watch arrived. Finally got the 25yr watch from the company that laid
> me off a week later…
> Anyway, I set the seconds rollover to 00 when time.gov reset and then
> walked down to my lab and noticed the watch is now 6 seconds slow. So
> I checked again with another computer, same problem, www.time.gov is 6
> seconds slow. Never say this happen, usually it is right on the money
> give or take about .2 seconds.
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