August 20

Sunday 20, 1989:

1989- In Beverly Hills, California, Lyle and Erik Menendez shoot and kill their wealthy parents.

Wednesday 20, 1986:

In Edmond, Oklahoma, US Postal employee Patrick Henry Sherrill guns down 14 of his co-workers and then commits suicide.

Thursday 20, 1914:

World War I: German forces occupy Brussels.

Sunday 20, 1882:

Piotr Ilyitch Tchaikovsky's 1812 Overture debuts in Moscow.

Saturday 20, 636:

Battle of Yarmuk: Arab forces led by Khalid bin Walid take control of Syria and Palestine away from the Byzantine Empire, marking the first great wave of Muslim conquests and the rapid advance of Islam outside Arabia.

More on August, 20

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