Today is the 198th day of 2017 and the 28th day of summer.
TODAY'S HISTORY: In 1918, abdicated czar Nicholas II and his family were executed by Bolsheviks at Yekaterinburg, Russia.
In 1945, President Harry S. Truman, Soviet Premier Josef Stalin and British Prime Minister Winston Churchill met at the Potsdam Conference in Germany.
In 1955, Disneyland opened in Anaheim, California.
In 1975, a U.S. Apollo spacecraft docked with a Soviet Soyuz spacecraft, and astronauts from both countries held the first international meeting in space.
TODAY'S BIRTHDAYS: Erle Stanley Gardner (1889-1970), author/lawyer; James Cagney (1899-1986), actor; Art Linkletter (1912-2010), TV personality; Phyllis Diller (1917-2012), comedian/actress; John Cooper (1923-2000), automobile designer; Vince Guaraldi (1928-1976), composer; Diahann Carroll (1935- ), actress; Donald Sutherland (1935- ), actor; David Hasselhoff (1952- ), actor; Mark Burnett (1960- ), television producer; Dawn Upshaw (1960- ), opera singer; Luke Bryan (1976- ), singer-songwriter.
TODAY'S FACT: Disneyland's opening day, intended as an exclusive event with limited invitations, was a disaster. Counterfeit passes and thousands of uninvited guests led to overcrowding, power outages, malfunctioning rides and depleted concessions.
TODAY'S SPORTS: In 2005, Tiger Woods won the British Open, becoming only the second golfer (after Jack Nicklaus) to win each major championship more than once.