I discovered these pictures taken on April 12, 2005, over Bangladesh, during a training flight. The altitude was 12,000'.
I spotted that little bright spot in the picture, low in front of the engine. I joined two other pictures to show the haze. And I doubt the bright spot could be a reflection from the ground because of the thick haze of that region of the world.
You compare pictures: same altitude, same region, same day.
I doubt more than usual because I had numerous sightings in that time frame and place along with fellow pilots. In fact, in 3 months, we counted 6 sightings of bright orbs, mostly at night.
One was sighted by 12 people at the same time, for a full minute. Many of us were speechless pilots. I think you should pinpoint Bangladesh as a UFO hotspot.