I observed Tiros N tonight just a flashing its way across the sky. I was using 10x50 binoculars. My wife couldn't see it with the naked eye. I picked it up as it sailed through Cassiopia at 0036:30Z and followed it with binos until 0039Z. I timed the flash rate at 3 to 5 seconds. Most of the time it was three, but several times it waited until five. My position is 29.267 N x 81.060 W John Bayne Ormond Beach, FL