Tuesday, May 22, 1691

A gas explosion at a coal mine in Changzhi, Shanxi, China, leaves at least 82 people dead.

Prayut Chan-o-cha (pictured), the commander-in-chief of the Royal Thai Army, launched a coup d'état against the caretaker government following six months of political crisis.

Upon landing in Mangalore, Air India Express Flight 812 overshot the runway and fell down a hillside, killing 158 of the 166 people on board.

Police announced that the skeletal remains of Federal Bureau of Prisons intern Chandra Levy, who had been missing for a year, had been found in Rock Creek Park in Washington, D.C.

In Public Prosecutor v Taw Cheng Kong, the Court of Appeal of Singapore overruled a High Court decision in the only time a statute in Singapore had been ruled unconstitutional.

During Hindu–Muslim rioting in Meerut, India, 19 members of the Provincial Armed Constabulary allegedly massacred 42 Muslims and dumped their bodies in water canals.

Location testing for Pac-Man, a Japanese arcade game that became an icon of 1980s popular culture, began in Shibuya, Tokyo.

The Dominion of Ceylon changed its name to Sri Lanka, adopted a new constitution, and officially became a republic within the Commonwealth.

The most powerful earthquake ever recorded, registering approximately 9.5 Mw, struck near Valdivia, Chile, generating tsunamis that reached Hawaii and Japan.

Ethnic riots mostly targeting the minority Sri Lankan Tamils broke out in Ceylon, resulting in at least 158 deaths over the next few days.

Germany and Italy signed the Pact of Steel, a military and political alliance.

California's Lassen Peak violently erupted, the only volcanic eruption in the contiguous U.S. in the 20th century until Mount St. Helens erupted in 1980.