Is it possible to change the date of a photo in the camera roll?
Yes, you can accomplish this by downloading third-party apps from the App Store.

Pixelgarde

One I've found very popular from my web searches is Pixelgarde. This app not only lets you edit the date and time of when your photo was taken, but also change or delete the location where it was taken in, the person who took it, and much more.



Again, this is the one I've found most popular in my web searches, but please feel free to pick up the one you most prefer!

Hope this helped you out, let me know !