Anyone know what would cause this. We were about 34,000 feet and as soon as I noticed it from the isle the airline told people to shut their phones down decending to Hanoi. I rushed to pull my phone out and got 10 seconds of video. Very odd like a giant light in the sky. I thought maybe the moon was up above, but was not. I got to my hotel and there was the moon in the sky. Pretty cool whatever it is.
Here are more screenshots from the video which are more revealing. I had to rotate the main photo so it didnt look weird in the wall. 
![20170612_224141.jpg]