People tend to check in during these times:
Great DC Blues Festival
Live Outdoor Entertainment at it's Best.
DC Gay Flag Football League's 1st Gay Bowl Championship game between the Washington Generals and the D.C. Admirals is 7-24 at 10am in preparation for the Gay Bowl in Houston. 2nd game July 31 at 10am;
Best hiking and tennis
The Carter Barron Amphitheatre is a 4,200 seat outdoor performance venue located in Rock Creek Park, and opened in 1950 in honor of the 150th Anniversary of Washington, DC as the nation's capital.