Events that occurred on 13 January.
 On Earth
- 1960 - J.R.R. Tolkien sends a letter to Elizabeth Jones.
- 1977 - Actor Orlando Bloom is born.
- 2009 - The Lord of the Rings: Conquest is released.
- 2010 - The Power of Tolkien's Prose: Middle-Earth's Magical Style by Steve Walker is published.
 On Arda
- T.A. 3019:
According to astronomy, the moon on that day of 3019, would have be a waning gibbous, which rises after midnight (and thus early on January 14) until it passes over the Misty Mountains and shine on the western side where the Gate was.