Years of the Sun

Since the destruction of the Lamps of the Valar in the far distant past, the Valar had dwelt for millennia in Aman under the light of the Two Trees, while the lands of Middle-earth had been lit only by starlight. That changed when Melkor and Ungoliant descended on Valinor and destroyed the Trees, plunging the land of the Valar into darkness.

Though the Trees were beyond healing, Laurelin the Golden Tree produced a single burning fruit before its end. The Valar set this golden fruit in a vessel, and sent it aloft piloted by a Maia named Arien. So the Sun rose for the first time in the West¹ as the host of Fingolfin first set foot in the Middle-earth.

From that event began the count of time in Years of the Sun, based on the passage of Arien's burning vessel through the skies of Arda. This comparatively brief latter part of the First Age lasted less than six hundred years, and saw the Wars of Beleriand, and the ultimate defeat of Morgoth in the War of Wrath. The Second and Third Ages lasted more than three thousand years each, seeing the rise and fall of Númenor, and the ascendancy of Sauron in Middle-earth. Sauron's great victories and his ultimate defeat form the background of the history of those Ages. Little is known of the Fourth Age or beyond, but the Years of the Sun continued to the present day.²