9 a.m. The William F. Ryan Community Health Center will hold a back-to-school immunization and school supply event at the Regent Family Residence, 2720 Broadway.
10 a.m. The Quinnipiac University Polling Institute, will release the results of a poll conducted simultaneously in Florida, Ohio and Pennsylvania, asking voter opinions of 2008 Presidential candidates and attitudes on gay rights.
10 a.m. Designer Ty Pennington and Shire Pharmaceuticals will unveil a community-building initiative at P.S. 72, 131 East 104th Street.
10 a.m. Council member Alan Gerson will sponsor the 2nd annual District 1 Senior Sail at the South Street Seaport.
11 a.m. The American Red Cross and Sen. John Sabini will announce fundraising efforts to help victims of recent floods in South Asia at 78-02 37th Avenue in Queens.
11 a.m. Sen. Charles Schumer will announce legislation to protect fashion designs from piracy at the Fashion Institute of Technology, 27th Street and Seventh Avenue.
11 a.m. Public Advocate Betsy Gotbaum and Council member Joel Rivera will announce support for a public benefits bill at the District 15 Office, 1901 Southern Boulevard in the Bronx.
11 a.m. Engineering students will demonstrate how recycled junk can be used for alternative fuels and renewable energy at the Cooper Union Albert Nerken School of Engineering Building, 51 Astor Place.
11 a.m. The Police Athletic League will hold a carnival for children at Central Park, East 72nd Street at the Band Shell.
11:30 a.m. Council members Leroy Comrie and James Vacca will tour senior centers, starting at the JSPOA Theodora Jackson Center, 92-47 165th Street, in Queens.
12:30 p.m. 2006 Democratic congressional candidate Steve Harrison will make an announcement regarding the 2008 race at Arthur Von Briesen Park at the foot of Bay Street at Fort Wadsworth on Staten Island.
12:30 p.m. The Transportation Commissioner Janette Sadik-Khan and DUMBO officials will announce the opening of a new pedestrian plaza and launch of a citywide public plaza initiative at Pearl and Water streets in Brooklyn.
2 p.m. Sen. Charles Schumer will announce a plan to increase federal funding to help modernize the sewage system at the Midland Beach gazebo on Staten Island.
6 p.m. Activists will call for President Bush and Dick Cheney to be impeached outside a fundraiser birthday party for Rep. Charles Rangel at the Tavern on the Green, Central Park West and 67th Street.
6 p.m. The AIDS Community Research Initiative of America will benefit an art sale at the Barney's Co-op, 236 West 18th Street.
6 p.m. A public hearing on proposed revisions to the Department of Education's discipline code will be held at the Tweed Courthouse, 52 Chambers Street.
7:30 p.m. Congressman Anthony Weiner will host a “Conference Call Town Hall” and discuss the situation in Iraq, the proposal to high tech arms to Saudi Arabia and bridge and road safety. To participate, call his office, at (718) 520-9001 [updated].