STEREO is down. Most active camera is Ahead COR2, it takes pics every 15 min or so, always 24/7. I have never seen it stopped before. And now there is a gap between 2018-09-14 17:54:24 and 22:24:24. There is only 1 picture after one from 22:24:24.

They obviously trying to hide something. Check for yourself

[link to stereo.gsfc.nasa.gov (secure)]