|-1399 DR||Dale Reckoning||Cormyr Reckoning||Northreckoning||Mulhorand Calendar||Present Reckoning|
|-1399 DR||-1424 CR||-2431 NR||705 MC||-2757 PR|
- Start of the Fourth Serôs War: The Hmur Plateau becomes overrun by a horde of koalinth and merrow, ending the peaceful merfolk Republic of Tivaan. A desperate mermaid steals the Emerald Eye of Kyron from the Dukars’ Tower at Myth Nantar to drive the horde off the plateau, only to become corrupted by its power and lead the horde herself against her remaining people and the rest of Serôs.
- Calimshan is complete freed from beholders.