On october 22, 2016 at about 9:24 p.M., i was outside talking on the phone when i noticed 5-6 aircraft flying together in what appeared to be an arc. i thought it was strange to see that many "planes" flying like this at night. at first i thought it may have been military craft since i don't live too far from an air force base. but slowly, each of the aircraft slowly dimmed out their lights, until they were no longer visible. after seeing the first two dim their lights, that is when i took a picture of the remaining craft still visible (3 readily visible, and 1 craft that was fading/disappearing in the night sky). i've never witnessed any aircraft flying at night and turning out the lights, let alone this many aircraft flying in such a pattern at night.