From: Paul
This is an acknowledged design flaw on their part. It will only
choose a user provided clock if the default pool is unavailable (short
or long term).
___
Very helpful chap/bunch at Emerald.
Seems to work correctly here - my local stratum
FWIW, since I downloaded Emerald Time a couple days ago, I have not observed an
offset of my iPhone's clock from UTC(NTP) of greater than one second. My
carrier is T-Mobile. I'll keep watching to see if it stays this good.
Sent from my iPhone
___
On Tue, Aug 5, 2014 at 3:24 AM, David J Taylor
david-tay...@blueyonder.co.uk wrote:
Seems to work correctly here - my local stratum 1 server is displayed if
it's reachable (i.e. I'm on my local network).
In the US it tries [0-3].us.pool and my local address. It chooses the
best three of those
From: Paul
In the US it tries [0-3].us.pool and my local address. It chooses the
best three of those and then it chooses one. The list also shows
(in pool.ntp.org) [0-3], europe, north-america. asia. oceania,
south-america and time.apple.com in that order. Is it the same in the
UK?
LTE does support the long-standard NITZ (network information and time zone)
service. It's an easy way to find out just where you are without having to
change your TZ settings constantly. In fact, if you go to time settings on HTC
Android phones, the 'automatic time update(NITZ)' setting turns
For informational purposes I will show what I use to compare with my stock
Iphone. It is an app called emerald time. Screenshot at:
https://www.dropbox.com/s/zt6tjrsylrrtrc3/2014-08-04%2008.06.02.png
You can set it up to sync with you own ntp server. I think. You can just spot
check it.
On Mon, Aug 4, 2014 at 5:38 AM, BIll Ezell w...@quackers.net wrote:
Clearly, just using something like NTP directly isn't all that useful
because you have to know your physical location to know what timezone
correction to appl
I'm pretty sure you have to set the time zone that is displayed.
On Mon, Aug 4, 2014 at 6:09 AM, Bill Dailey docdai...@gmail.com wrote:
I have never done a rigorous analysis but it appears to be within 1.5s or
better most of the time.
That is what to expect. as of IOS 5 they use NTP but they look at the
clock drift and use NTP at a polling interval just
As someone who crosses time zone boundaries with relative frequency, I can tell
you that the iPhone does indeed set it's time zone automatically, based on
information the phone gets from the cellular network.
Sent from my iPhone
On Aug 4, 2014, at 11:49, Chris Albertson
Hi
I *think* it’s even more specific than that. I’ve watched it switch time
driving down the road in Indiana. As we did zig zags over the time zone line,
the iPhone quite happily changed displayed time. My guess was that it used GPS
location info to decide which side of the line it was on.
You can select the behavior you prefer...
SettingsGeneralDate Time. You can set it manually or have it set
automatically based on your current location.
Leaving to automatic uses a surprising amount of battery power.
On Mon, Aug 4, 2014 at 3:16 PM, Bob Camp kb...@n1k.org wrote:
Hi
I
Bill,
I just got Emerald Time for my iPad - quite a great app, considering I need
accurate time for things. Is there a website for the app developer?
Many thanks!
Shane.
On Tue, Aug 5, 2014 at 8:16 AM, Bob Camp kb...@n1k.org wrote:
Hi
I *think* it’s even more specific than that. I’ve
and frequency measurement
Subject: Re: [time-nuts] How are iPhones' clocks set under LTE?
As someone who crosses time zone boundaries with relative frequency, I can
tell you that the iPhone does indeed set it's time zone automatically, based
on information the phone gets from the cellular network
with the clock settings (which _maybe_ could be
construed as tampering with the OS).
Brian
-Original Message-
From: Bill Dailey
Sent: Monday, August 04, 2014 6:09 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] How are iPhones' clocks set under LTE
you would have to dig around and look. I am sure there is. I have played
with it for a year or two. I put my own ntp server in there and was
frequently disappinted that it would prefer remote servers quite often..
which cant be better than mine. I dont get that but otherwise I like it.
Bill
On Mon, Aug 4, 2014 at 2:24 PM, Brian Garrett
garrettbrian1...@gmail.com wrote:
However,they will not alter the phone's internal clock.
Yes, Apple does not present an (unpriviledged) iOS API to set the
clock. Neither does (current, unpriviledge) Android. That's probably
a good thing.
On Mon, Aug 4, 2014 at 6:32 PM, Shane Morris edgecombe...@gmail.com wrote:
Bill,
I just got Emerald Time for my iPad - quite a great app, considering I need
accurate time for things. Is there a website for the app developer?
http://www.emeraldsequoia.com/
On Mon, Aug 4, 2014 at 8:01 PM, Bill
ahhh.. I wondered
On Mon, Aug 4, 2014 at 7:27 PM, Paul tic-...@bodosom.net wrote:
On Mon, Aug 4, 2014 at 6:32 PM, Shane Morris edgecombe...@gmail.com
wrote:
Bill,
I just got Emerald Time for my iPad - quite a great app, considering I
need
accurate time for things. Is there a website
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
On Sun, Aug 3, 2014 at 4:37 PM, Brian Garrett
garrettbrian1...@gmail.com wrote:
Has this been discussed on the list before?
I think so, but google iOS NTP which apparently is what's used to
periodically set the clock (at large intervals) but not to discipline
it.
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,
IOS is getting the time using the IP network which is above the CDMA
or WiFi level. It polls an NTP server just frequently enough to keep
the system clock to within a few seconds of correct time.
I could run the full NTP but doesn't because that would drain the
battery to fast. Background tasks
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
Well, I seem to remember finding NTP running on my jail broken iPhone. But that
was a few years ago.
On Aug 3, 2014, at 17:41, Tim Shoppa tsho...@gmail.com wrote:
Unlike CDMA (where time distribution was an automatic part of the low-level
protocol) I suspect the time displayed on many
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