The 21st Commonwealth Games officially began on the Gold Coast, Queensland, Australia.
Source
Finland officially joined NATO, becoming the 31st member of the security alliance.
NASA's Challenger Space Shuttle was launched from Florida on its maiden voyage.
The Declaration of Breda document was issued by the exiled King Charles II of England.
Bill Gates and Paul Allen founded Microsoft.
The Pink Star Diamond sold for a record USD 71 million in Hong Kong.
