1 The Grey Havens and Lindon are founded.
32. The Edain reach Númenor.
c.40 Many Dwarves leave their old cities in Ered Luin, go to Moria and swell its numbers.
442 Elros Tar-Minyatur, first king of Númenor dies.
c. 500 Sauron begins to stir again in Middle-earth.
548 Silmariën is born in Númenor.
600 The Númenóreans begin to explore the coasts of Middle-earth.
750 Eregion is founded by the Noldor, their lord is Celebrimbor, grandson of Fëanor.
c. 1000 Sauron is alarmed by the growing power of the Númenoreans. He chooses Mordor as a land to make into a stronghold and begins the building of Barad-dûr.
1075 Tar-Ancalimë becomes the first Ruling Queen of Númenor.
1200 Sauron endeavours to seduce the Eldar. Gil-galad refuses to treat with him, but the Smiths of Eregion are won over. The Númenoreans begin to make permanent havens.
c.1500 The Elven-smiths of Eregion, instructed by Sauron, reach the height of their power and begin forging the Rings of Power.
c.1590 The Three Rings, Narya, Vilya and Nenya, are completed in Eregion.
c. 1600 Sauron forges the One Ring in Orodruin. He completes Barad-dûr. Celebrimbor perceives the designs of Sauron.
1693 War of Sauron and the Elves begins. The Three Rings are hidden.
1695 Sauron’s forces invade Eriador. Gil-galad sends Elrond to Eregion to help.
1697 Eregion laid waste. Death of Celebrimbor. The gates of Moria are shut. Elrond retreats with the remnant of the Noldor and founds the refuge of Imladris.
1699 Eriador is overrun by Sauron.
1700 Tar-Minastir sends a great fleet from Númenor to Lindon. Sauron is defeated.
1701 Sauron is driven out of Eriador. The Westlands have peace for a long while.
c. 1800 The Númenoreans begins to establish dominions on the coasts. Sauron extends his power eastwards. The shadow falls on Númenor.
2251 Tar-Atanamir becomes King of Númenor. Rebellion and division of the Númenóreans begins. About this time, the Nazgûl or Ringwraiths, slaves of the Nine Rings first appear.
2280 Umbar is made into a great fortress of Númenor.
2350 Pelargir is built. It becomes the chief haven of the Faithful of Númenor.
2899 Ar-Adûnakhôr becomes King of Númenor.
3175 Repentance of Tar-Palantir, King of Númenor.
3255 Ar-Pharazôn seizes the sceptre of Númenor.
3261 Ar-Pharazôn sets sail and lands at Umbar.
3262 Sauron is taken as prisoner to Númenor.
3262-3310 Sauron seduces the King and corrupts the Númenóreans, urging them to attack Valinor.
3310 Ar-Pharazôn orders a huge armada fleet to be built, the Great Armament.
3319 Ar-Pharazôn assails Valinor. Downfall of Númenor. Elendil, the Lord of the Faithful, and his sons, Isildur and Anárion, escape. They take with them the sword Narsil, a fruit of the White Tree, Nimloth, and the Palantíri.
3320 The Realms in Exile, Arnor and Gondor are founded. The Palantíri are spread around the Realms. Sauron returns to Mordor.
3429 Sauron attacks Gondor, takes Minas Ithil and burns the White Tree. Isildur escapes down Anduin and goes to Elendil in the North. Anárion defends Osgiliath and Minas Anor.
3430 The Last Alliance of Elves and Men is formed.
3431 Gil-galad and Elendil march east to Imladris.
3434 The host of the Alliance crosses the Misty Mountains. The Battle of Dagorlad and defeat of Sauron. The siege of Barad-dûr begins.
3440 Anárion is slain.
3441 Sauron is overthrown by Elendil and Gil-galad, who perish. Isildur takes the One Ring. Sauron passes away and the Ringwraiths go into the shadows. The Second Age ends.

Research by: Celedë_Anthaas

Source: The Lord of the Rings, Appendix B