I am starting an exploratory project to determine the time (of day) of which a photo is taken based on image features. I've done some research and downloaded a few databases hoping that "creation date", "last modified", or the file names will properly reflect the time when the original photo was taken, but I have had no luck.
So far I will be resorting to all of my personal photos, which I do not think will be sufficient enough in quantity or diverse enough in quality.
Are there any natural image datasets out there with timestamps or even timestampped file names?