12 March

Events that occurred on 12 March.

On Earth

• 1927 - J.R.R. Tolkien writes a letter to Ronald Ashton.
• 1958 - J.R.R. Tolkien receives Index questions from Nancy Smith.
• 1966 - J.R.R. Tolkien writes a letter to John Bush.
• 2003 - "Battle of Helm's Deep", the fifth set in The Lord of the Rings Trading Card Game, is released.
• 2012 - Update 6: Shores of the Great River, the sixth free update of The Lord of the Rings Online, is released.
• 2015 - Terry Pratchett dies.

In Arda

• T.A. 2510:
  • Borondir and his companion are on their way in search of the Éothéod.
• T.A. 3019:
  • Gollum leads Frodo and Sam into Shelob's Lair.
  • Faramir has to retreat to the Causeway Forts.
  • The Rohirrim travel towards Minas Tirith. They camp under Min-Rimmon.
  • Aragorn drives the enemy towards Pelargir.
  • The Ents overcome the invaders of Rohan.