In the words of the Valaquenta: 'She walks not by day, but sleeps upon an island in the tree-shadowed lake of Lórellin.' This seems to imply that Estë walks by night, but during the long Years of the Trees there was neither day or night in Valinor. Perhaps these words simply mean that Estë slept when the Light of the Trees was at its fullest, awaking only when it faded, but that is far from a natural reading. Alternatively, perhaps these words were written after the Darkening of Valinor and the first rising of the Sun, in which case Estë's association with the night must have arisen relatively late in her history.