From Tolkien Gateway

Astar (sg. asta[1]) is Quenya for the months of the Númenórean calendars.

Typically, an asta had 30 days, with the exception of the two medial astar in the Kings' Reckoning, that had 31 days each.[2]


asta derives from the Root SAT.[3][4]


  1. J.R.R. Tolkien, "Words, Phrases and Passages in Various Tongues in The Lord of the Rings", in Parma Eldalamberon XVII (edited by Christopher Gilson), p. 120
  2. J.R.R. Tolkien, The Lord of the Rings, Appendix D, "The Calendars"
  3. J.R.R. Tolkien, "The Rivers and Beacon-hills of Gondor" (edited by Carl F. Hostetter), in Vinyar Tengwar, Number 42, July 2001, pp. 19-20
  4. J.R.R. Tolkien, "Eldarin Hands, Fingers & Numerals and Related Writings — Part Two" (edited by Patrick H. Wynne), in Vinyar Tengwar, Number 48, December 2005, p. 11