The Years before the Trees in the Creation of Middle Earth

1 The Valar reach Arda. Melkor descends to Arda and destroys their work.
15 Tulkas reaches Arda and chases Melkor away. A long time of peace follows.
19 The Two Lamps Illuin and Ormal are built. The Valar take their home on Almaren.
34 Melkor returns to Arda and starts building Utumno. He destroys the Lamps of the Valar and forces the Valar to move into the West.
35 The Two Trees of Valinor are build upon the mountain Ezellohar.