21 March

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• 1923 – Voice actor Peter Pratt is born.
• 1956 – J.R.R. Tolkien writes a letter to E. Rasdall.
• 1957 – J.R.R. Tolkien writes Letter 196.
• 1966 – J.R.R. Tolkien writes a letter to George Sayer.
• 1967 – J.R.R. Tolkien writes a letter to Humphrey Carpenter.
• 1968 – Actor Greg Ellis is born.
• 1974 – Actor Joseph Mawle is born.
• 2007 – The Lord of the Rings Online: Shadows of Angmar, "The City of Kings" is released in North America.
• 2011 – Update 2: Echoes of the Dead, the second update of The Lord of the Rings Online, is released in North America.
• 2011 – Principal photography for The Hobbit (film series) begins.

• Third Age 2510:
• — Borondir is on his way in search of the Éothéod.
• Third Age 3017:
• — Aragorn delivers Gollum as a prisoner to Thranduil of Mirkwood.
• Third Age 3019:
• —
• — Frodo and Samwise continue their journey along the road to Barad-dûr.
• — New Moon<noinclude>

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1. Esta ficha se ha importado inicialmente de TolkienGateway.net el día 20/05/2026.