Summer 1967 was known as "the summer of love." (DS9: "Past Tense, Part II")
After the USS Defiant was sent back in time to the 22nd century and crashed on the planet Gaia, Jadzia Dax cut her hair short during the summer after the crash. (DS9: "Children of Time")
In mid- 2374, Worf suggested to Jadzia that they should hike across Vulcan's Forge for their honeymoon. Jadzia was not keen to honeymoon there at all - especially in summer. (DS9: "Change of Heart") Template:Earth seasons