From the Second Circuit Website:

12/28/05 - Due to a planned infrastructure upgrade to the Thurgood Marshall United States Courthouse, located at 40 Foley Square, the Law Library will close on Friday February 24, 2006 for the duration of the project. During the pendency of the project, the library collection temporarily will be relocated.
Effective January 3, 2006, Library Hours will be: Monday, Wednesday, Friday, 9:00 am to 12 :00 noon, Tuesday and Thursday, 9:00 am to 4:45 pm. A list of local public access law libraries and Government Documents Depository Libraries is available in the Library.