Events that occurred on 20 May.
On Earth
- 1931 – Actor Michael Spice is born.
- 1965 – J.R.R. Tolkien writes Letter 270.
- 1969 – J.R.R. Tolkien writes Letter 310.
- 2011 – Unquendor's Lustrumfeest.
In Arda
- T.A. 3019:
- Arwen and Elrond come to Lothlórien on their way to Minas Tirith.