40 second citing, Two craft side by side, from north to south pulsing red then green circular light, 4 pulses total.Two craft flying side by side from North to South at a speed beyond belief. They cross directly overhead from north horizon to south horizon in 30 to 45 seconds. Each pulsed a flashing light twice (serially), one green then the other red at 10 second intervals. Light pulses were very large and circular. No sound.