|Year of the Cascade||Dale Reckoning||Cormyr Reckoning||Northreckoning||Mulhorand Calendar||Present Reckoning|
|309 DR||284 CR||-723 NR||2413 MC||-1049 PR|
- Halaster Blackcloak becomes ruler of Undermountain after executing Halaster's Hunts between 171 DR and 308 DR to destroy or drive out the resident drow and duergar.
- Queen’s Consort Karazir Tiiraklar of Tethyr and his brother Ellessor lead an army to “conquer” the “uncivilized lands to the east,” which had been home to humans, elves, dwarves, and other humanoids living in small mountain settlements since the Second Age of Calimshan. Ellessor becomes the duke of the newly established duchy of Elestam.
- The port city of Cham Fau is settled within a lush valley along the Hungtse River in Shou Lung. Construction on the nearby White Tiger monastery is completed in the same year.