8:30 a.m. The NewYork-Presbyterian Hospital and Columbia University Medical Center will host their annual breast cancer conference at Club 101, 101 Park Avenue at 40th Street.
10 a.m. St. John's University students and faculty will volunteer at a soup kitchen as part of University Service Day at the Church of the Nativity, 44 Second Avenue.
11 a.m. Church on the Hill AME Zion will host a conference on gun violence at 2009 Amsterdam Avenue.
11 a.m. Irish cultural advocates will protest the building of a highway through Tara, the ceremonial and mythical capital of Ireland, outside the Irish Consulate, 345 Park Avenue at 51st Street.
1 p.m. Trinity Community Development will hold a disaster awareness forum at Evening Star Baptist Church, 267 Gates Avenue, in Brooklyn.
6 p.m. Dominicans will protest deportations at Teatro United Palace, 175th Street and Broadway.
12:30 p.m. Council member David Weprin will urge Columbia University to rescind their invitation to Iranian President Mahmoud Ahmadinejad to speak at the university at 116th Street and Broadway.
10 a.m. The city’s Council Committee on Consumer Affairs will hold a hearing to discuss issuing licenses to purchase etching acid at 250 Broadway.
10 a.m. The city’s Council Committee on Environmental Protection will hold a hearing on the flooding crisis in Queens at City Hall.
1:30 p.m. Iranian president Mahmoud Ahmadinejad is scheduled to speak at Columbia University’s Roone Arledge Auditorium, 2920 Broadway.
7:30 p.m. Chris Matthews, host of Hardball, will moderate a panel discussion on “The Living Room Candidate: Winning Ads, Winning Campaigns” with panelists including Mark McKinnon, who is working on John McCain’s campaign, Marius Penczner, John Edwards’ media consultant, and Drew Westen, author of The Political Brain: The Role of Emotion in Deciding the Fate of the Nation, at the Times Center, 242 West 41st Street.