SciFiQuest 3017: The Frontier that Wouldn't End... hasn't ended. Still. See the quest node for details.
June 4: Aesop's Birthday.
June 11: TerribleAspect's birthday!
June 16: Bloomsday.
June 19: Juneteenth.
June 21: The first day of summer (northern hemisphere) and winter (southern hemisphere).
June 28: Tau Day.
If you have an item for this calendar, /msg Tem42.