Time: Toril (Forgotten Realms) year 0 began.
Time: Nirn 1st Era began.
Earth -5800
Event: Chrono Cross
Earth -5760 / Nirn 1E 240
Lore (Nirn): The Skyrim Conquests began - the series of conquests by which the First Empire (also known as the Ysgramor Dynasty) conquered High Rock, Morrowind, and a large section of the Nibenay Valley.
Earth -5585 / Nirn 1E 415
Lore (Nirn): The Skyrim Conquests ended.
Earth -5490 / NRC 510
Event: Record of Lodoss War
Earth -5486 / NRC 514
Event: Record of Lodoss War: Chronicles of the Heroic Knight
Earth -5300 / Nirn 1E 700
Lore (Nirn): War of the First Council ended: A Religious conflict between the secular Dunmer Houses Dwemer and Dagoth and the orthodox Dunmer Houses Indoril, Redoran, Dres, Hlaalu, and Telvanni.
Lore (Nirn): Disappearance of the Dwemer.
Earth -5286 / Toril 714
Lore (Toril): The Weeping War - A battle in which the Akh’Velahr (the army of Cormanthor) were defeated by the invading demonic forces named the Army of Darkness, leading to the fall of the elven city of Myth Drannor, the greatest and most powerful bastion of civilization by far at the time.
Earth -4990 / Star Wars -9990
Technology: Lightsaber was invented.
Earth -4719 / Toril 1281
Event: Icewind Dale
Earth -4689 / Toril 1311
Event: Icewind Dale 2
Earth -4642 / Toril 1358
Lore (Toril): The Time of Troubles, also known as the Arrival, the Godswar and the Avatar Crisis, was a cataclysmic time period in the chronology of Faerun. The Time of Troubles was a period during which the deities of Faerun were forced to walk the earth in their mortal avatar forms. Several major deities died during the Time of Troubles and a handful of mortals rose to divinity
Event: Demon Stone
Earth -4632 / Toril 1368
Event: Baldur’s Gate
Event: Baldur’s Gate 2
Earth -4630 / Toril 1370
Lore (Toril): The Goblin Wars - The war started when Nalavarauthatoryl, (an elf-dragon) massed an army of Orcs, Grodd goblins, the seven Ghazneths and other monsters to attack the country of Cormyr. Interestingly, although the war is referred to as the Goblin Wars, goblins only made up a fraction of the army, most of the fighting being done by the Orcs.
Earth -4628 / Toril 1372
Event: Neverwinter Nights
Earth -4626 / Toril 1374
Event: Neverwinter Nights 2
Earth -4615 / Toril 1385
Lore (Toril): The Spellplague was a disaster that struck Realmspace on 29th Tarsakh, the Year of Blue Fire, 1385 DR, and was caused by Midnight’s assassination at the hands of Cyric and Shar. With the goddess’s death, the Weave, the universal structure of arcane forces, convulsed. It continued for a decade, leading to the Wailing Years, during which arcane magic ceased to function and the planet of Toril was transformed.
Earth -4515 / Toril 1485
Event: Neverwinter Online
Earth -3679 / Nirn 1E 2321
Lore (Nirn): War of Righteousness happened. Half population in High Rock was wiped out.
Earth -3160 / Nirn 1E 2840
Lore (Nirn): Four Score War began, between Morrowind and the Cyrodiilic Empire.
Earth -3080 / Nirn 1E 2920
Lore (Nirn): Morag Tong assassinated King Reman Cyrodiil III.
Earth -3059 / Middle-Earth 2941