Or when daylight savings time has changed. Set on the camera, such as after travelling across time zones, Useful when having taken pictures with the wrong time If you happen to have the wrong-set camera still at hand and still wrong, I find it handy to take a shot of a (time-synced) digital clock - then, take the date shown in the picture as "newdate" and the date in the metadata as "olddate" for the parameters below.Īdjust time stored in the Exif header by h:mm backwards or for. It has a simple adjust by-hours command, but for big changes it also has an old -> new syntax which computes the difference for you (so you don't have to worry about leap years and so on). You have to format the dates correctly, but it's easy to do by following the examples (see the documentation I've included below). If you're not used to command-line programs, this is a pretty non-intimidating one because there's not a lot to it. It's completely free (and open source) and is easily available for Windows, Mac, or Linux. The simple command-line program jhead is great for this.
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