Events that occurred on 1 January.
 On Earth
- 1910 - The earliest preserved diary entry is written by J.R.R. Tolkien.
- 1919 - J.R.R. Tolkien starts a new diary, mainly written in the Alphabet of Rúmil.
- 1926 – E.V. Gordon replaces Tolkien in the Chair of English Language at the University of Leeds.
- 1938 – In a series of lectures aimed at children, J.R.R. Tolkien lectures on Dragons in the University Museum.
- 1941 – J.R.R. Tolkien resigns as Governor of King Edward's School.
- 1956 - J.R.R. Tolkien writes a letter to a fan.
- 1970 - J.R.R. Tolkien writes Letter 315.
- 1972 - Voice actress Jennifer Hale is born.
- 1986 – Inkling Lord David Cecil dies.
- 1995 - Proceedings of the J.R.R. Tolkien Centenary Conference is published.
- 2002 - A Tolkien Miscellany is published.
- 2003 - The original Tolkien Gateway opens.
- 2006 - Tolkien News is created.
- 2008 - Fantasy novel The Search for the Red Dragon is published.
- 2018 - A Well of Wonder: C. S. Lewis, J. R. R. Tolkien, and The Inklings will be published.
 On Arda
|Months in the Shire Calendar|
Afteryule was the first month of the Shire calendar, thirty days immediately following the holiday of Yule (hence its name). It ran from modern 23 December to 21 January. This month was called Frery in Bree and in the Eastfarthing