Last summer I bought a nikon coolpix s6300 digital camera. I took many photos and videos (10 GB in size). At the beginning I didn't know how to set the right date and time, so all the photos and videos were set in the external sd card at 1/1/2012, I think this was the default time and date in case you didn't change it. After a while a friend of mine did the job for me and he set the right date and time. Now I have many videos and photos that are dated at 1/1/2012, which were taking properly on May and June.
Is there a way to retrieve the correct time and date for all the photos and videos that were taken before it was changed? I know this might look impossible because I think this is somehow embedded in the hardware on the camera. But there might be hope.