Lunar Colonies was a location presumably on Earth's moon, Luna. Doctor Karen Patterson booked passage from Earth to Lunar Colonies on stardate 2716.6, and from there, travelled to Altair VI on stardate 2717.1. (TOS - S31 novel: Cloak)
- It would seem, from context, that "Lunar Colonies" is a proper name for a single location -- perhaps a transit station -- rather than a reference to the colonies of the Moon collectively. It is also possible that "Lunar Colonies" could be on or near the moon of a planet other than Earth.