Gemini VII (space mission in
Project Gemini)
December 4-18, 1965
Frank Borman,
James A. Lovell, Jr.
13 days, 18 hours, 35 minutes 1 seconds
When the Gemini VI mission was scrubbed because its Agena target for rendezvous and docking failed, Gemini VII was used for the rendezvous instead. Primary objective was to determine whether humans could live in space for 14 days.
Source: NASA