The very first episode involving time travel (and the dangers of not washing your hands after an away mission).
| Air Date | 29 September 1966 |
| Production Number | 6149-07 |
| Stardate | 1704.2 |
| Gregorian Calendar Date | Thursday, 28 December 2265 06:17:32 GMT Monday, 25 December 2265 14:39:45 GMT |
| Primary Arc | Polywater Intoxication |
| Secondary Arc | Temporal Investigations |
| Tertiary Arc | n/a |
| See It or Skip It | See It! |
| Previously on Star Trek | Order | Next Time on Star Trek |
|---|---|---|
| The Man Trap | Chronological | Balance of Terror |
| Where No Man Has Gone Before | Air Date | The Enemy Within |
| The Man Trap | Production | Charlie X |
| n/a | Primary Arc | The Naked Now |
| TBD | Secondary Arc | Tomorrow is Yesterday |
| n/a | Tertiary Arc | n/a |
Shirtless Sidebar: Why does Bones need to rip Kirk’s uniform to give him a hypo?
Star Date Sidebar: This episode starts on starts on star date 1704.2 (Thursday, December 28, 2265) and ends on star date 1691.3 (Monday, December 25, 2265)
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