My world clock app is goofy.

There is no apparent provision to edit or adjust it, merely add cities or delete them.

The problem is that while it accurately show local time, USA times, it is off an hour for European time zones, like UTC. I suspect it has something to do with daylight savings.

Any hints how to get it straightened out?

Have you checked "Date & Time" in Settings>General?

quote:

Originally posted by kkina:
Have you checked "Date & Time" in Settings>General?

Yep. Those are correct for this time zone. The time is an hour off for UTC and Central European time, maybe others.

I'd delete the app, do a Network Reset of iPad then reinstall the app.

quote:

Originally posted by PASig:
I'd delete the app, do a Network Reset of iPad then reinstall the app.

Can you do that with a "built in app?"

What's a network reset?

quote:

Originally posted by JALLEN:

quote:

Originally posted by kkina:
Have you checked "Date & Time" in Settings>General?

Yep. Those are correct for this time zone. The time is an hour off for UTC and Central European time, maybe others.

iOs is supposed to adjust time automatically, actually polling the various timezones to detect a DST. But I think it only checks once a day; can you just wait 24 hours and see if it recalibrates? Or has this been an ongoing issue for more than a day?

check to see whether or not the DST checkbox is selected

quote:

Originally posted by kkina:

quote:

Originally posted by JALLEN:

quote:

Originally posted by kkina:
Have you checked "Date & Time" in Settings>General?

Yep. Those are correct for this time zone. The time is an hour off for UTC and Central European time, maybe others.

iOs is supposed to adjust time automatically, actually polling the various timezones to detect a DST. But I think it only checks once a day; can you just wait 24 hours and see if it recalibrates? Or has this been an ongoing issue for more than a day?

I've been annoyed by this for some time. Being a radio operator for nearly 60 years, I've been a stickler for correct time. Now that my wife is in her home in France, I want to be able to see the time there, and it is wrong.

The U.S. times are all correct, but UTC and CET, maybe others, are off by an hour.

quote:

Originally posted by JALLEN:

quote:

Originally posted by kkina:

quote:

Originally posted by JALLEN:

quote:

Originally posted by kkina:
Have you checked "Date & Time" in Settings>General?

Yep. Those are correct for this time zone. The time is an hour off for UTC and Central European time, maybe others.

iOs is supposed to adjust time automatically, actually polling the various timezones to detect a DST. But I think it only checks once a day; can you just wait 24 hours and see if it recalibrates? Or has this been an ongoing issue for more than a day?

I've been annoyed by this for some time. Being a radio operator for nearly 60 years, I've been a stickler for correct time. Now that my wife is in her home in France, I want to be able to see the time there, and it is wrong.

The U.S. times are all correct, but UTC and CET, maybe others, are off by an hour.

As a workaround how about just setting the time manually?

Is it possible that Daylight Savings Time involved somehow?

quote:

Originally posted by walkinghorse:
Is it possible that Daylight Savings Time involved somehow?

Well, that's what we think is going on, but the problem is how to fix it.

https://www.timeanddate.com/worldclock/

Check it against this site. UTC will be different than London as it doesn't compensate for DST.

quote:

Originally posted by JALLEN:
The U.S. times are all correct, but UTC and CET, maybe others, are off by an hour.

My local time (EST DST) is correct, as is UTC and London time. Didn't find an entry for CET. (Didn't look hard. I'm doing a power consumption test, Part Deux. Today's being "What's it like if I leave it alone?")

iPhone 6S with iOS 10.3.2.

Are you up-to-date on OS and apps?

quote:

Originally posted by ensigmatic:

quote:

Originally posted by JALLEN:
The U.S. times are all correct, but UTC and CET, maybe others, are off by an hour.

My local time (EST DST) is correct, as is UTC and London time. Didn't find an entry for CET. (Didn't look hard. I'm doing a power consumption test, Part Deux. Today's being "What's it like if I leave it alone?")

iPhone 6S with iOS 10.3.2.

Are you up-to-date on OS and apps?

Paris is CET.

I think the problem may be that I am on UTC, but the iPad isn't. It is displaying London time, not UTC. My watch is UTC.

quote:

Originally posted by JALLEN:
Paris is CET.

Ah, the French. Still thinking themselves the center of the universe. Or, at least, Europe

quote:

Originally posted by JALLEN:
I think the problem may be that I am on UTC, but the iPad isn't. It is displaying London time, not UTC. My watch is UTC.

So if you go into the world time app and add UTC to the list of times it displays, does it show the right time?

Here's the thing about general purpose operating systems that support time zones. (Well, modern systems, anyway.) They have a value buried somewhere in their innards that is the current time in UTC. No matter where in the world those systems are located, they all have the same value for "time" at any instant. What you see is that time adjusted for your time zone.

If I may be allowed to geek-out, for reasons of demonstration, I will demonstrate by way of some off-the-cuff code:

$ perl -e 'use Date::Calc qw(Gmtime); printf "%02d:%02d:%02d\n", (Gmtime(time()))[3..5]'
14:05:32
$ perl -e 'use Date::Calc qw(Localtime); printf "%02d:%02d:%02d\n", (Localtime(time()))[3..5]'
10:05:41

They both get their time from a function named "time()", which queries the system for the current time, but, the former expresses that in terms of UTC, which the latter in terms of the local time (which it figures out from either a system setting or the executing program's environment.)

(N.B.: For the computer/network geeks out there: Yes, I know my explanation isn't strictly accurate, but, it's close enough for explaining the principle of interest, here.)

quote:

Originally posted by ensigmatic:

quote:

Originally posted by JALLEN:
Paris is CET.

Ah, the French. Still thinking themselves the center of the universe. Or, at least, Europe

quote:

Originally posted by JALLEN:
I think the problem may be that I am on UTC, but the iPad isn't. It is displaying London time, not UTC. My watch is UTC.

So if you go into the world time app and add UTC to the list of times it displays, does it show the right time?

Here's the thing about general purpose operating systems that support time zones. (Well, modern systems, anyway.) They have a value buried somewhere in their innards that is the current time in UTC. No matter where in the world those systems are located, they all have the same value for "time" at any instant. What you see is that time adjusted for your time zone.

I was astonished to see in the iPad app a city selection for UTC which had escaped my notice, and my suspicions.

When I got this iPad a couple of years ago, it was during normal time, I set it up with London as the city, the same as UTC, and Paris, and I was fat, dumb and happy.

quote:

Originally posted by JALLEN:

quote:

Originally posted by PASig:
I'd delete the app, do a Network Reset of iPad then reinstall the app.

Can you do that with a "built in app?"

What's a network reset?

Ahh, I didn't think that it was a stock Apple app. You can delete some but not most and I doubt if the Clock app will allow a remove/re-install.

I still think the Network Reset works to clear up a lot of issues, you could still try that:


https://support.apple.com/en-us/HT204051

I'm happy to say that since I realized the app featured both London Time and UTC, sometimes but not always the same, the "problem" has been resolved.

I deleted London and added UTC instead.

quote:

Originally posted by JALLEN:
I'm happy to say that since I realized the app featured both London Time and UTC, sometimes but not always the same, the "problem" has been resolved.

Unfortunately, the insanity that is Daylight "Savings" Time has infected our UK and European brethren, as well. So, yes: When London is on standard time they will match. Otherwise they'll be an hour off from one another.

Jim --

Take a look at the free "ZuluTime" app, available for both iPhone and iPad.