Today is the 261st day of 2020 and the 90th day of summer.

TODAY’S HISTORY: In 1787, delegations from 12 states voted to approve the proposed Constitution at Philadelphia’s Constitutional Convention.

In 1862, more than 23,000 people died or were wounded in the Battle of Antietam near Sharpsburg, Maryland, resulting in the bloodiest single day in U.S. military history.

In 1978, Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin reached a historic accord at Camp David.

In 2001, the New York Stock Exchange reopened, having been closed since the Sept. 11 terrorist attacks.

TODAY’S BIRTHDAYS: Rube Foster (1879-1930), baseball player/manager; William Carlos Williams (1883-1963), physician/poet; Hank Williams Sr. (1923-1953), singer-songwriter; George Blanda (1927-2010), football player; Anne Bancroft (1931-2005), actress; Ken Kesey (1935-2001), author; Phil Jackson (1945-), basketball player/coach; Baz Luhrmann (1962-), filmmaker; Kyle Chandler (1965-), actor; Jimmie Johnson (1975-), race car driver; Flo Rida (1979-), rapper; Alex Ovechkin (1985-), hockey player.

TODAY’S FACT: NASA unveiled its first space shuttle, Enterprise, at a ceremony in Palmdale, California, on this day in 1976.

TODAY’S SPORTS: In 2004, Barry Bonds became just the third baseball player in history (after Hank Aaron and Babe Ruth) to hit 700 career home runs.

TODAY’S QUOTE: “I’ve never seen anybody really find the answer. They think they have, so they stop thinking. But the job is to seek mystery, evoke mystery, plant a garden in which strange plants grow and mysteries bloom. The need for mystery is greater than the need for an answer.” — Ken Kesey

TODAY’S NUMBER: 30 — years a state of war had existed between Israel and Egypt when the Camp David accords were signed on this day in 1978.

TODAY’S MOON: New moon (Sept. 17).