Yes, an accurate date does help to pinpoint who the subject/s of the photograph might be. Knowing when a photograph was taken, where it was taken – together with the details of the image itself – often make it possible to decide who the sitter really is.

Can you see where a photo was taken on iPhone?

When you take a photo, the iPhone automatically logs the location it was shot. To see where an individual image was taken, open the Photos app and tap the thumbnail to open the image. Then swipe up on the image and a map showing where the photo was taken will appear below.