The Fourth Interval is the period of time in Pernese history that began at the end of the Fourth Pass and ended at the beginning of the Fifth Pass. It spanned the Turns 808AL through 1258AL. It is also known as the First Long Interval. This article is a stub. You can help Pern Wiki by expanding it. Retrieved from "https://pern.fandom.com/wiki/Fourth_Interval?oldid=11800" Categories: Article stubs Pern History Community content is available under CC-BY-SA unless otherwise noted.