I was hoping someone with more photography experience than me would reply, but here is what I can offer.
My 3 interpretations of the question:
1) changing a date that is time stamped in the photo itself
an image editor software like gimp can be used to paste a text box with new date over the existing
as far as I know you must do this for each photo.
there are batch photo editors, but have never used one
2) changing the exif/metadata date
I have never used one but there are batch editors to change these tags to multiple images files at once.
I found phatch by a google, never used it or any other though
3) changing the windows file system date
another google suggested some software to change these dates from in the file system
https://superuser.com/questions/71962/how-to-change-file-creation-time-in-the-different-file-systems I am curious which was your end goal and how you finally got this solved.
good luck in any case!
I hope some others with more photography experience chime in.
post edited by EABarlan - 2017/04/14 04:00:19