調整照片Exif時間 (jhead)

 -ta<+|->h[:mm[:ss]]
            Adjust time by h:mm forwards or backwards.  Useful when having
            taken pictures with the wrong time set on the camera, such as when
            traveling across time zones or DST changes. Dates can be adjusted
            by offsetting by 24 hours or more.  For large date adjustments,
            use the -da option

jhead -ta+48 D:\Pic\*.jpg