- This article is about the new, gatherer-exclusive version of the Diadem that was launched to complement the Ishgardian Restoration in patch 5.21. For the version that existed between patch 3.55b and patch 5.1, see The Diadem/Old. For the original version from patch 3.1, see Exploratory Missions/Old.
The Diadem is a zone in Abalathia's Spine. It is as much an instance as it is a zone. Unlike the Firmament, the Diadem is cross-server within your Data Center, and you have a 180 minute (Earth time) limit inside, after which you must zone out and back in. This is the same as other Field Operations and is a remnant of the Diadem's tumultuous development.
Ocean Fishing is exclusive to fishers which allow them to set sail together on the Endeavor in search of adventure on the high seas. It requires a party of 1 to 24 players and has the time limit of 60 minutes. It was introduced in patch 5.2 of Shadowbringers expansion.