Events that occurred on 13 October.
On Earth
- 1917 - J.R.R. Tolkien is found unfit for duty for six months, but able to do a desk job.
- 1938 - J.R.R. Tolkien writes Letter 34.
- 1962 - Tim Tolkien is born.
- 1968 - Riddles in the Dark, the third episode of the 1968 radio series of The Hobbit, is aired on BBC Radio.
- 1968 - Stanley Unwin dies.
- 2007 - Ring*Con 2007 in Fulda, Germany.
- 2015 - The Art of The Lord of the Rings is published in the USA.
In Arda
- F.A. 495:
- T.A. 3018:
- With Frodo severely wounded, Strider and the four hobbits travel slowly towards Rivendell. They cross the Last Bridge and find the beryl left by Glorfindel.
- Gandalf hurries towards Rivendell after the Black Riders attacked him on Weathertop.
- Boromir travels towards Rivendell to ask for counsel.