The Titan II GLV (Gemini Launch Vehicle) or Gemini-Titan II was an American expendable launch system derived from the Titan II missile, which was used to launch twelve Gemini missions for NASA between 1964 and 1966. Two unmanned launches followed by ten manned ones were conducted from Launch Complex 19 at the Cape Canaveral Air Force Station, starting with Gemini 1 on April 8, 1964.WIKI
Gemini 10 was the eighth crewed mission of the NASA's Project Gemini. It was commanded by Command Pilot John W. Young and Pilot Michael Collins. Gemini 10 achieved the objectives planned for the last two missions - rendezvous and docking with Agena target vehicle, and EVA. The mission started on July 18, 1966, 22:20:26 UTC and ended on July 21, 1966, 21:07:05 UTC.
NET: July 18th 1966 - 22:20 UTC
Instantaneous launch window.