A seam across the sky

We were in San Simeon yesterday, staying at a hotel next to the ocean, when I saw this in the sky. I think it should be an album cover.

What’s happening is that the sun is out of frame in the upper left. It’s perfectly aligned with the jet contrail, creating a parallel shadow. The jet is just entering the clouds in the lower right and the shadow stretches put before it all the way to the horizon.

jet contrail and shadow in the blue sky