21 September

Events that occurred on 21 September.

On Earth

• 1923 – Swedish author and translator Roland Adlerberth is born.
• 1937 – The Hobbit is published.
• 1937 – J.R.R. Tolkien writes a letter to Simonne d'Ardenne.
• 1937 – J.R.R. Tolkien signs copies of The Hobbit and sends them to E.V. Gordon, Elaine Griffiths, Helen Buckhurst, Stella Mills, Hilary Tolkien, C.S. Lewis and Katherine Kilbride.
• 1947 – J.R.R. Tolkien writes Letter 111.
• 1965 – Actor David Wenham is born.
• 1986 – Oxonmoot 1986 at Oxford Town Hall.
• 1990 – Oxonmoot 1990 at Oxford Town Hall.
• 1991 – Oxonmoot 1991 at University College.
• 1996 – Oxonmoot 1996 at University College.
• 1997 – Oxonmoot 1997 at Exeter College.
• 2001 – Oxonmoot 2001 at St Antony's College.
• 2003 – Oxonmoot 2003 at St Hugh's College.
• 2007 – The History of The Hobbit is published in the United States.
• 2012 – Oxonmoot 2012 at Lady Margaret Hall.
• 2013 – Oxonmoot 2013 at Lady Margaret Hall.
• 2015 - Arne Zettersten, colleague and friend of J.R.R. Tolkien, dies.
• 2017 - Oxonmoot 2017 at St Antony's College.
• 2018 - Oxonmoot 2018 at St Antony's College.

In Arda

• T.A. 3018:
  • Gandalf meets Shadowfax, but the horse does not allow him to come near. He follows Shadowfax far over the fields.
  • Frodo starts to become really anxious of Gandalf's absence, and keeps a constant look-out for him.
  • Boromir travels towards Rivendell to ask for counsel.
• T.A. 3019:
  • Gandalf and the Hobbits arrive at Rivendell.
• T.A. 3021
  • Frodo and Sam set out from Hobbiton for the Grey Havens.