Dayos IV
Dayos IV was the inhabited fourth planet in the Dayos system, in the Beta Quadrant.

In 2363, the planet was the home of a former wife to the Albino when she was discovered by Kang. She was still deathly afraid of her ex-husband and refused to reveal his whereabouts to the vengeful Klingon. In 2370, she died, but not before dispatching her amulet to Kang disclosing the location of the Albino's sanctuary in the Secarus system. ()

Miles O'Brien's Starfleet Intelligence created alias of Connelly, a down on his luck fix-it man, got two years for dealing in stolen goods on the planet. Liam Bilby sympathized with "Connelly" while discussing his past, and regarded the incident as a "tough break." ()

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Dayos 04