Changing the date and time of photos

I had pics of a trip with 3 different cameras, the date/time setting of one of those cameras were wrong and thus if i added all the pics in one folder and sorted it by “picture taken on”, it would not sort the pics of the camera with wrong settings. To solve this problem i found this link

http://www.killertechtips.com/2008/04/13/how-to-edit-exif-tags-in-photos-to-change-the-date/

Then to find the difference between 2 dates i used these

http://disc.gsfc.nasa.gov/julian_calendar.shtml

http://www.grun1.com/utils/timeDiff.cfm

http://calendarscripts.info/time-difference-calculator.html

and the result was: all pics from 3 different cameras were sorted in order of time in one folder.

 

-urShadow