https://bugzilla.wikimedia.org/show_bug.cgi?id=26090

           Summary: EXIF date prefill does not deal with insane dates well
           Product: MediaWiki extensions
           Version: any
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: UploadWizard
        AssignedTo: ne...@wikimedia.org
        ReportedBy: ne...@wikimedia.org
                CC: gpaum...@wikimedia.org, asha...@wikimedia.org


If it encounter an EXIF value like DateTimeDigitized: "0000:00:00 00:00:00" it
parses the date wrong.

For this value, we get Nov 30, 1899. 

This suggests we are blindly using the numbers given, with offsets for the
month (this is year zero, 1900, and month 0 == month -1, day 0 = day -1, at
midnight).

Solution (?) check dates for sanity before prefilling. Year, month, and day of
zero are all impossible.

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