This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Starbase 24 was a Federation starbase administered by Starfleet. This base was located close to the Federation-Klingon border in the Beta Quadrant. It was located near Gamma Hromi, Ramatis, and the Federation border with the Klingon Empire.
In 2293, the starships USS Constellation and USS John Muir were at this station. The Constellation was there for certification tests and the John Muir was there for a system upgrade. The starbase was named on a Starship Mission Assignments chart on the USS Enterprise-A bridge.
In 2346, the USS Intrepid transported Worf's nursemaid, Kahlest, to Starbase 24 where she could be treated for her injuries at the base's biomedical facility. The starbase, due to its proximity to Khitomer, had the best records of the Khitomer Massacre in 2366. (TNG: "Sins of the Father", "Redemption")