1st » China resumes sovereignty over the city-state of Hong Kong, ending 156 years of British colonialism called colonial rule.
6th » The Troubles: In response to the Drumcree conflict e.g Drumcree dispute, five days of 1997 nationalist riots in Northern Ireland e.g mass protests, riots and gun battles begin in Irish nationalist districts of Northern Ireland.
7th » The Turkish Armed Forces withdraw from northern Iraq after Operation Hammer (1997) called assisting the Kurdistan Democratic Party in the Iraqi Kurdish Civil War.
10th » In London scientists report the findings of the DNA analysis of a Neanderthal skeleton which supports the "out of Africa theory" of human evolution placing an "African Eve" at 100,000 to 200,000 years ago.
15th » In Miami known as Miami, Florida, serial killer Andrew Cunanan guns down Gianni Versace outside his home.
19th » The Troubles: The Provisional Irish Republican Army resumes a ceasefire to end their Provisional Irish Republican Army campaign 1969–1997 named 25-year campaign to end British rule in Northern Ireland.
20th » The fully restored USS known as Constitution (aka 'Old Ironsides') celebrates its 200th birthday by setting sail for the first time in 116 years.
22nd » The second Blue Water Bridge opens between Port Huron, Michigan and Sarnia, Ontario.
23rd » Digital Equipment Corporation files Competition law called antitrust charges against chipmaker Intel.