The DSAP-1 (Defense Satellite Application Program Block 1) satellites series, also known as P-35, was the first series of military meteorologal satellites of the USA. April 26, 1963 at 00:00 UTC · Launch Failure Scout X-2M — United States Air Force, to Sun-Synchronous Orbit Space Launch Complex 5, Vandenberg SFB, CA, USA The world's 241st orbital launch attempt, and 17th of 1963. Data: Launch Library 2, The Space Devs.