Here's the article and the quote. Very appropriate for time-nuts: http://www.washingtonpost.com/lifestyle/style/for-public-clocks-a-time-warp/2011/10/25/gIQAXOZ5jM_story.html
"If the clocks are right — on churches and in classrooms, on stores and in bars — they tell us that things are in order, say clock advocates such as Bernardin. They tell us that people are paying attention. If a clock is wrong, maybe everything else is, too." On Sun, Aug 3, 2014 at 5:41 PM, Tim Shoppa <[email protected]> wrote: > Unlike CDMA (where time distribution was an automatic part of the > low-level protocol) I suspect the time displayed on many modern phones is > not set by the telephony synchronous protocol but rather by IP-over-Wifi > packets. > > And the packets don't seem to do a very effective job keeping the clock > ont he phone correct. My employer gave me a Nokia Lumia 630 "Windows Phone" > and its clock has always been off by at least a minute. > > There was a few years ago, a very nice article about the effort to repair > the clocks in clock towers in many cities. What rang most true to me was > "if you visit a town they can't even keep the clock correct, who else knows > what else is wrong there?". > > Tim N3QE > > > On Sun, Aug 3, 2014 at 4:37 PM, Brian Garrett <[email protected]> > wrote: > >> Hi all, >> >> First “time”r here. This may not rank up there with your degree of >> time-nuttery, but I haven’t been able to get an answer elsewhere. Recently >> I was discussing the issue of how the different cellular providers set >> their time, and I told him that I’d read that CDMA phones and towers have >> to have their clocks synced to GPS as part of the protocol, whereas GSM >> phones do not, and can theoretically be set to wall time, and thus phones >> on networks using CDMA would have atomic accuracy all the time since what >> they were getting was as good as GPS. >> >> Well, obviously I was pathetically behind the times. Most everybody >> these days including Verizon, which both I and my friend have now, uses LTE >> , as you know. I have looked all over for info as to what LTE’s >> time-setting requirements are, as implemented by Verizon, but I’ve not seen >> discussions of it anywhere. I’ve seen amusing anecdotes over what can >> happen if your Android isn’t set to receive the network’s time, or what can >> happen to your phone’s clock if you live near a time zone boundary, but no >> discussion of how time dissemination is handled in-network. I know my >> iPhone can be, and usually is, 2 or 3 seconds fast or slow when checked >> against an accurate reference clock, so I’m thinking they can just use wall >> time like GSM did. >> >> Has this been discussed on the list before? I haven’t seen anything in >> the archives, and no-one at Verizon that we of the unwashed masses have >> access to will know the answer Pointers, anyone? >> >> >> Thanks in advance, >> Brian >> _______________________________________________ >> 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.
