My friend and I saw the same type of thing same day (Tuesday) at apx 9pm in NE Florida. It was dark with not a cloud in the sky and a bright rectangular light appeared traveling upward in our atmosphere and then just vanished like it went behind a cloud but NO Clouds ! and the moon was bright enough that if it had just turned off lights we'd have been able to see it. Now the two of us saw this and it was NOT a projection or a shooting star , it was going upward on an angle .. just vanished. Same place above my house I saw a triangle UFO a few months back.