The Long Night Timeline

Imperial Year	Aebasan Year	Neptaran Year	Event
1620 B.I.	5006 A.C.	869 B.F.	The Dagda becomes ruler of the Tuatha de Dannan as Ogma steps down
1527	5099	776 B.F.	The Goblet of Gundagor is stolen, presumably by a human. Peace between humans and dwarves is shattered.
1520	5106	769 B.F.	Nuada becomes ruler of the Tuatha de Dannan after the Dagda disappears
1008	5618	257 B.F.	Bres, a half giant, elected ruler of the Tuatha de Dannan after Nuada loses his arm in combat and is judged unfit to rule
989	5637	238 B.F.	Bres is overthrown by Nuada, who has been restored by Macht.
750	5876	1 N.C.	End of the First Age of Elvenkind; the Dagda returns to the Tuatha de Dannan. After a brief meeting with King Nuada, the latter orders the Tuatha to retire to Otherworld. The Foundation of Neptaris by along the wild shores of the Durian continent by the explorer Zarakos of Taranio.