21 March

Events which occurred on 21 March.

On Earth

• 1923 - Peter Pratt, who would play Balin in the 1968 radio series of The Hobbit, is born.
• 1957 - J.R.R. Tolkien writes letter 196.
• 1966 - J.R.R. Tolkien writes a letter to George Sayer.
• 1968 - Actor Greg Ellis is born.
• 2011 - Peter Jackson's adaptation of The Hobbit begins filming.

In Arda

• T.A. 2510:
  • Borondir is on his way in search of the Éothéod.
• T.A. 3018:
  • Aragorn delivers Gollum as a prisoner to Thranduil of Mirkwood.
• T.A. 3019:
  • The Host of the West marches towards the Black Gate.
  • Frodo and Samwise continue their journey along the road to Barad-dûr.