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Apply Original EXIF Date/Time and DST

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    Apply Original EXIF Date/Time and DST

    Why doesn't the "apply original EXIF date/time to new file" functionality in the lossless transformations always apply the date/time in the EXIF data correctly? Sometimes it is one hour off. It seems to get messed up by daylight savings time. If we have gone on or off daylight savings time between the time the picture was taken and the time I "apply original EXIF date/time," it is messed up. (To clarify, I am talking about the timestamp of the file as shown by my operating system's file browser, not the the "file date/time" in the Irfanview "image properties".)

    For example, I took a picture on 6/21/07 at 11:18am. When I downloaded the picture from my camera to my desktop on 6/22/07 at 3:45pm, the file timestamp shown in my operating system's file browser was 6/22/07 at 3:45pm. I used Irfanview to "apply original EXIF date/time to new file" and it changed the timestamp to 6/21/07 at 11:18am, as expected. However, if I wait until after we have gone off of daylight savings time, like today for example, to "apply original EXIF date/time", it changes the timestamp to 6/21/07 at 12:18pm. The EXIF date/time is 6/21/07 at 11:18am, which is correct, so why does change the timestamp to 6/21/07 at 12:18pm?

    I hope this makes sense. It isn't as complicated as I've probably made it sound. Sorry! How can I get my file timestamps to be correct? Please help!

    Thanks!
    Rebecca

    #2
    Hi Rebecca,

    Maybe you can temporarily disable DST in Windows (via Control Panel / Date Time). Don't forget to re-enable it after the conversion. Does this help?

    Laurent
    Before you post ... fill in your OS and IV version in your profile.

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      #3
      Laurent,

      Thanks so much for your suggestion. I tried it and it did not work. However, I think I have now found that the problem has nothing to do with Irfanview. I am actually running Windows inside a virtual machine on my Linux box. I access my Linux files from Windows using Samba. It appears to be a Samba problem. I'm so sorry to have wasted your time!

      Rebecca

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        #4
        Hi Rebecca,

        No problem. Thanks for your feedback.

        Laurent
        Before you post ... fill in your OS and IV version in your profile.

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          #5
          IFV "file date/time" errors?

          Does anyone know why IrfanView's image properties display of "file date/time" would be exactly six hours off of known creation times?

          I have experimented with a number of photos, and without fail the properties report is six hours off: Could it be set (indelibly) for GMT/Zulu time - which IS exactly six hours off from Central Daylight Time (CDT), where I reside?

          Thanks - in advance - for helping to clarify this issue!

          Steve
          Two Harbors, MN
          (20 miles, and 50 years "north" of Duluth... if you get my drift?)

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            #6
            Are you saying that IrfanView's Properties don't match Windows' Properties?

            I run into the DST problem when I do incremental backups. The software always thinks my files have changed, because the modified date is always an hour off. It drives me nuts! I usually have to turn it on/off, like mentioned for backups, but you have to remember. If you don't, you'll mess up all the new files' times, too! It is crazy. I wish I knew a solution to this.

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