It's a 24 hour time lapse of 365 days played simultaneously. It's taken in San Fancisco. There's full details here.
This is great from the perspective of providing clarity to the active-geoengineering and chemtrail theories, as it shows just how many days have blue
skies, how many have natural clouds, and how few have significant contrails.
The sequence starts in the summer, so the winter days show up in the middle.
I noticed that the days with more clouds and "chemtrails" (they seem to be grouped around the middle) are darker for longer than the other days.
Must be something to do with the attenuation of the HAARP rays they're bouncing off these things.