Walking with my daughter at around 6:56 pm pst around 33.7272° n, 116.2995° w. i am a pilot in training and like to watch every single moving light in the sky all the time. so i raised my head to see this one as well. at first i thought it was the moon behind the cloud and than quickly realized that moon comes out from the opposite direction and there were no cloud. this object looks like the size of a dime has bright white light under some cloaking cloud which were moving with the light. speed was similar to the other aircraft in the area. it was moving towards 2 other aircraft in the area and it moved fast for fraction of a second and the light came out from the front in arch format from both sides. and than it disappeared after few seconds. it has no beacon , no wing lights ( red or green) lights which are seen on an aircraft. just one round light object.