Chekov

Pavel Andreievich Chekov. Prior to Chekov's assignment to the Enterprise, he was romantically involved with a woman named Irina Galliunin. At the time, both were apparently in Starfleet, although Irina subsequently resigned because she felt Startleet was too regimented for her liking ("The Way to Eden" [TOS] ). Chekov said he was 22 years old in "Who Mourns for Adonais" (TOS), (2267), suggesting a birthdate of 2245. As of this writing, the last data point we have for Chekov is 2293, at the launch of the Starship Enterprise B (Star Trek Generations).

2245: Born ("Who Mourns For Adonais?" [TOS] ).

2263: Enters Starfleet Academy (conjecture).

2267: Graduates Starfleet Academy (conjecture).

2277: Assigned to Starship Reliant (Star Trek II: The Wrath of Khan).

2293: Attends launch of Enterprise B (Star Trek Generations).