Today is Friday, August 28, the 240th day of 2015. There are 125 days left in the year.

On this date: In 1609, English sea explorer Henry Hudson and his ship, the Half Moon, reached present-day Delaware Bay. In 1862, the Second Battle of Bull Run (also known as Second Manassas) began in Prince William County, Virginia, during the Civil War; the result was a Confederate victory. In 1922, the first-ever radio commercial aired on station WEAF in New York City; the 10-minute advertisement was for the Queensboro Realty Co., which had paid a fee of $100. In 1945, the Allies began occupying Japan at the end of World War II. In 1963, more than 200,000 people listened as the Rev. Martin Luther King Jr. delivered his “I Have a Dream” speech in front of the Lincoln Memorial in Washington D.C. In 1964, two days of race-related rioting erupted in North Philadelphia over a false rumor that white police officers had beaten to death a pregnant black woman.