The Noontide of Valinor was “the period of the greatest bliss in Valinor” (Foster 2001, p. 371), which lasted for three ages. Following the making of the Two Trees of Valinor, it began with the Chaining of Melkor within the Halls of Mandos and the arrival of the Three Kindreds in Eldamar; during this time the Calaquendi and the Valar lived peacefully alongside one another. The period ended upon Melkor’s release, when the bliss began to dissipate; Melkor’s corruption led to the Darkening of Valinor, the poisoning of the Two Trees (which were destroyed forever), and the revolt of the Noldor.
Also known as: the Noontide of the Blessed Realm, the Days of the Bliss of Valinor, the Days of Bliss, the Days, and the Day.
Fisher, M. (2001). Noontide of Valinor. In Encyclopedia of Arda. Retrieved from http://www.glyphweb.com/arda/m/mearas.html
Foster, R. (2001). Noontide of Valinor. In The complete guide to middle-earth: from the hobbit through the lord of the rings and beyond. New York: Del Rey.
Tolkien, J.R.R. (1979). The Silmarillion. Christopher Tolkien, (Ed.). Random House Digital.