8:30 a.m. Pro-PlaNYC groups will hold a rally prior to an Assembly hearing on the Mayor's sustainability proposal on the sidewalk outside the CUNY Graduate Center, 365 Fifth Avenue between 34th and 35th streets.
8:30 a.m. The Sixth Annual Conference on Urban Health will be held in the Helmsley Park Lane Hotel, 36 Central Park South.
9:15 a.m. Columbia University Medical Center will hold a symposium on "Radiological Science in the Context of Radiological Terrorism" at the Russ Berrie Medical Science Pavilion, 1150 St. Nicholas Avenue between 168th Street and Broadway.
10 a.m. Mayor Bloomberg will appear on “Live from City Hall with Mayor Mike and John Gambling” on WABC Radio, 770 AM and http://www.wabcradio.com.
10 a.m. The state Assembly will hold a hearing on the environmental and energy conservation impact of the Mayor's sustainability proposal at the CUNY Graduate Center, 365 Fifth Avenue between 34th and 35th streets.
10 a.m. State DEC commissioner Pete Grannis will celebrate the 25th anniversary of the Bottle Bill with students at P.S. 345 at the Patrolman Robert Bolden School, 111 Berriman Street, in Brooklyn.
10 a.m. Wounded servicemen and women who are cycling from Washington, D.C. to Montauk will hold a press conference at "10 House," across from Ground Zero at 124 Liberty Street.
11 a.m. The Department of Transportation and Parks commissioners will unveil the official New York City bicycle helmet at Central Park's Bandshell.
11 a.m. Assemblyman Jose Peralta and the Queens District Attorney's Office will hold an educational gang workshop at I.S. 61, 98-50 50th Avenue, in Corona, Queens.
Noon. Minority youth will be honored for academic achievement at the A Better Chance annual awards luncheon at the Waldorf-Astoria Grand Ballroom, Park Avenue and 49th Street.
12:30 p.m. The new Queens Library at Long Island City will open at 37-44 21st Street at 38th Avenue, in Queens.
6:30 p.m. College & Community Fellowship will host a graduation ceremony for former prisoners at the CUNY Graduate Center’s Baisley Powell Elebash Recital Hall, 365 Fifth Avenue at 34th Street.
9 p.m. A Pre-Father's Day dance celebration to benefit the 4th annual Children's Sports & Fitness Expo will be held at the New York City Mission Society’s Minisink Townhouse, 646 Malcolm X Boulevard at 142nd Street.