9 a.m. Columbia University will host an African Economic Forum at the Columbia University Kellogg Centre, 420 West 118th Street.
10:30 a.m. Asian Women in Business and Rep. Gary Ackerman will hold a free workshop for Asian American owned businesses in Queens and Nassau County at the Korea Village Open Center, 150-24 Northern Boulevard in Queens.
11 a.m. The House Judiciary Subcommittee on Immigration will hold a hearing on the historical trends and personal experiences of American immigration at the Ellis Island National Monument.
11 a.m. Council Member Gale Brewer and Bronx Borough President Adolfo Carrion Jr. will hold the first hearing of the New York City Broadband Advisory Committee at the Gould Memorial Library Auditorium at Bronx Community College, University Place and West 181st Street, in the Bronx.
Noon. Public Advocate Betsy Gotbaum calls for additional high school seats at James Madison High School, 3787 Bedford Avenue in Brooklyn.
3 p.m. Students will raise money for cancer research at a Relay for Life event at the St. Francis College Genovesi Center, 180 Remsen Street in Brooklyn Heights.
4 p.m. Amnesty International and New York University students will hold a vigil and rally to urge Chinese action on Darfur outside China’s Permanent Mission to the United Nations, First Avenue at 35th Street.
5 p.m. KeySpan executives and employees will play in the annual Hoops for Charity event to benefit the Dr. Susan Love Research Foundation at Aviator Sports at Floyd Bennett Field, Hangar 5 in Brooklyn.
Former Mayor Rudy Giuliani fundraises in Utah.
Sen. Hillary Clinton campaigns in Concord, New Hampshire and Boston.
Barack Obama campaigns in Tallahassee, Florida.
— Gillian Reagan