How do I see the date my PS4 screenshots were taken?

I exported a bunch of screenshots to USB drive and wanted to organize them on my PC. For some games, I see the date the screenshot was taken in the file name, other games just append gamename_1, gamename_1. Is this a setting in the PS4, or does each game determine the file name convention?

Edit: nevermind, i screwed this up when i copied to the hard drive.