Vostok 6 launch, Gagarin’s Start, Baikonur Cosmodrome UTC, 16 June 1963 Published on June 15, 2013 in 16 June 1963, 09:29:52 UTCFull resolution (537 × 532) ← Previous Next → Vostok 6 just prior to engine start, Gagarin’s Start, Baikonur Cosmodrome, 16 June 1963.