What day of the week was June 20, 1900?

The day of the week June 20th, 1900 fell on was a Wednesday.

Boxer Rebellion: The Imperial Chinese Army begins a 55-day siege of the Legation Quarter in Beijing the China. Baron Eduard Toll the leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya (polar ship)|Zarya, never to return.