Handel Commemoration
1784 CE.
Shown on the map at 51.499°, -0.127°.
The original Handel Festival or "Commemoration" took place in Westminster Abbey between 26 May and 5 June 1784, to commemorate the twenty-fifth anniversary of the death of George Frideric Handel in 1759. A series of further commemorations were held between 1785 and 1859.
Text from the Wikipedia article Handel Commemoration, licensed CC BY-SA 4.0.