While in the back yard at approximately 2020lcl we observed 3 bright lights in an equilateral triangle. approximately at 110 degrees, used iphone compass, and about 40 degrees up from the horizon to the east. no sound or movement observed. lights just appeared then went off 10+/- seconds later. lights were bright and steady with a constant white hue. lights were approximately an inch apart in a perfect triangle. too dark for a clear phone photo.