8 a.m. Sara Flocks, co-founder of Young Workers United, discusses effort to mandate sick leave; The Harvard Club, 35 West 44th St.
8:30 a.m. Michael Bloomberg speaks at the opening of the World Science Festival; Columbia University’s Low Memorial Library, 116th Street and Broadway.
10 a.m. Cooper Union’s 149th commencement ceremony; procession from Albert Nerken School of Engineering, 51 Astor Place, to Cooper Union’s Great Hall at Third Avenue and East 8th Street.
10 a.m. Anthony Weiner greets 400 high school leaders at Youth Summit 2008; McGraw-Hill Companies, 1221 Sixth Ave.
11 a.m. Council Member Bill de Blasio calls on the Administration for Children’s Services to revamp its system for deciding fate of day care centers; City Hall Steps.
11 a.m. Ribbon cutting for the northern portion of Bronx River Greenway; Bronx River Park, East 233rd Street and Webster Avenue.
11 a.m. Alan Dershowitz keynotes Baruch College commencement ceremony; The Theater at Madison Square Garden.
Noon. Family advocates kick off vigil to protect children from budget cuts; City Hall Steps.
12:30 p.m. MoveOn aunches “Bush-McCain Challenge”; Columbus Circle.
3 p.m. Child Rights and You America representatives discuss plight of India’s children; Roosevelt Hotel, 45 East 45th St.
3:30 p.m. Canon law expert Zenon Cardinal Grocholewski receives honorary degree from Fordham University; Fordham University, McNally Amphitheatre.
3:30 p.m. Madison Square Garden workers rally for better wages and job security; southwest corner of 33rd Street and Seventh Avenue.
4 p.m. Tenants announce lawsuit against landlord for code violations; 74-78 Post Ave., Inwood.
4 p.m. New York Police and Fire Widow’s and Children’s Benefit Fund’s 24th Annual Picnic and Mets game at Shea Stadium.
4:30 p.m. Rally to save summer jobs; City Hall Park.
5:30 p.m. The 33rd annual American Women in Radio & Television’s Gracie Allen Awards; Marriott Marquis Hotel.
5:30 p.m. Free viewing of Yankees game at Bryant Park; Sixth Avenue between 40th and 42nd streets; 6 p.m. to 7:30 p.m. autograph signing with Al Leiter, Craig Nettles, Bucky Dent, and Mike Torrez.
5:30 p.m. Former top athletes Carl Banks, Lenny Dykstra and Rod Gilbert discuss transferring on-field skills to business success; The Core Club, 66 West 55th St.
6 p.m. City Year New York honors C.E.O.s of Cisco Systems the M.T.A. at its annual Ripples of Hope Dinner; Pier 60 at Chelsea Piers.
6 p.m. Anderson Cooper and Elmo host 6th Annual Sesame Workshop Benefit Gala; Cipriani 42nd Street, 110 East 42nd Street.
6 p.m. New School forum on bipartisanship; Swayduck Auditorium, 65 Fifth Ave.
6:30 p.m. State Public Service Commission holds information session and public hearing on 2006 Queens blackout settlement proposal; P.S. 11, Auditorium, 5225 Skillman Ave., Woodside.
6:30 p.m. Town Hall meeting on school budget cuts; I.S. 51, 20 Houston St., Staten Island.
7 p.m. Panel hosted by the Network of Indian Professionals and South Asian Americans Leading Together, at 986 Second Avenue.
7 p.m. Dick Cheney speaks at the New York Republican State Committee Dinner; New York Sheraton Hotel and Towers, Metropolitan Ballroom East, 811 Seventh Ave.
7:30 p.m. Rally launching the New York City 9/11 Ballot Initiative Campaign to create an independent commission to lead new investigation of 9/11; St. Mark’s Church.
8 p.m. Rudy Giuliani and John Edwards speak Radio City Music Hall; Sixth Avenue and 50th Street.
8 p.m.Chuck Schumer calls on the Department of Homeland Security to make sure that all companies that ship to New York City ports make DHS-ordered security improvements; Schumer’s office, 757 Third Ave., Suite 1702.