Could you please clarify whether the GPSTimeStamp format is valid? Looks like aspect ratio function was reused to output the time field.
identify -verbose file_3d.jps
exif:DateTime: 2000:01:01 00:06:12
exif:GPSDateStamp: 2000:01:01
exif:GPSInfo: 1434
exif:GPSTimeStamp: 0/1, 6/1, 12/1
Tried on Win7 64bit and CentOS6 64bit. ImageMagick-6.7.8-2-Q16 portable.