In each eye is a different photo taken from a different location of the same cloud formation, a new type of cloud named Asperatus. It looks as though they must have been taken around the same time. The different angles of the cloud gives us the opportunity to view it in 3D. We call it 4D because there is a difference in time between the two images. I have only slapped this image together to work out if it is even real. So far it looks like it is but I’ve yet to find out more about it. I have no idea when the photos were taken.
Here is the rendition I posted earlier today: