(The first and last two dates are from The War of the Jewels, HoME Vol 11: I made the rest up. )
545 : the Host of the Valar arrive in Middle Earth. Noldor land at Mouths of Sirion, Vanyar land at Eglarest.
559: attack from the east on Bay of Balar, counterattack takes out lower Gelion
563: Balrog attacks from Nevrast repulsed
565: giant flood magic on River Sirion
577 Ulmo takes action on dragon infestation in Doriath & Brethil
583 Ered Luin, Nogrod, Belegost, attacked by fleeing Balrog. Gulf of Lune created
587 : Victory in Middle Earth
590 : Melkor thrust through the Doors of Night into the Everlasting Darkness, Angband area collapses.