Subject: Re: Timestamp confusion
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From: PeterN <"peter,newdelete"@deleteverizon.net>
Newsgroups: rec.photo.digital
Subject: Re: Timestamp confusion
Date: Thu, 9 Nov 2017 12:24:56 -0500
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On 11/9/2017 7:02 AM, Terry Pinnell wrote:
> Terry Pinnell<me@somewhere.invalid> wrote:
> 
>> I'm sorting out holiday photos (JPG) and movies (MOV) from Italy in May.
>> Mainly from my iPhone 6S+. As I use these for making videos, I'm keen to
>> get their rough roughly correct. But I'm confused by some apparent
>> contradictions about timestamps. In an attempt to resolve these, amongst
>> other things I'm looking at the iPhone's EXIF data. Here's an example of
>> where I hit a snag:
>>
>> https://www.dropbox.com/s/5j6luq2xtgi7paf/EXIFvGPS-1.jpg?dl=0
>>
>> That 'DateTimeOriginal' of 11:28 seems reliable. Not only is it obtained
>> directly from the iPhone's Date/Time setting (which was correct
>> throughout the holiday) but a photo of a church clock the day before was
>> accurate within a minute or so.
>>
>> But this was Italy in 'summer time'. So local Italy time should be two
>> hours ahead of GMT, yes? Therefore why is the GPS Timestamp 10:28
>> instead of 09:28?
>>
>> Here's a similar issue for an MOV video clip,, using MediaInfo for my
>> detective work:
>>
>> https://www.dropbox.com/s/5yn8kjs3badl8ap/TimeConfusion-2.jpg?dl=0
>>
>> Needless to say, I should have taken photos of my watch or iPhone screen
>> more often - will do so in future!
>>
>> Terry, East Grinstead, UK
> 
> Alternatively, does anyone have any photos taken in 'summer' time on an
> iPhone in a time zone ahead of UK, such as mainland Europe etc? If so,
> can you advise what these two EXIF fields say please?
> Date TimeOriginal
> GPS Date Timestamp
> 
> That might help me fathom why my iPhone shows these as only differing by
> one hour instead of two. My wife's Sony Xperia (Android OS) does show
> two.
> 
> Terry, East Grinstead, UK
> 

If you contact Apple support, or go to an Apple store they will give you 
the answer. I found Apple support to be helpful. Yes I do pay for it. 
Before I had Apple Care, I had an issue on my iPhone that the folks at 
an Apple store were only to glad to help me with.

-- 
PeterN