I saw someone's video showing the bright light at 19:00 hours on 7/7/15. I decided to look it up and noticed that in the next frame 12 minutes later, available from NASA's data shows a debris field left from the explosion.

The explosion itself is either edited or so bright that the pixel sensor cells were overloaded causing the white pixel. At least the top and bottom of the explosion is clear enough along with the debris field in the next frame to understand that something happened.


Here's the saved images. Feel free to look it up yourself. [link to imgur.com]


[link to sohodata.nascom.nasa.gov]

Select:
Image Type: LASCO C2
Resolution: 1024
Start & End Date: 2015-07-07

Then click Search.

You'll be presented with 110 frames covering July 7th, 2015.

Frame 87: 18:48 Hours
Frame 88: 19:00 Hours - Frame with explosion
Frame 89: 19:12 Hours - Frame with debris field
Frame 90: 19:24 Hours