Sunday is the last day to see “Rain Room,†that field of falling water digitally programmed to create a carefully choreographed downpour, using motion detectors to create a dry path for viewers. To accommodate as many people as possible, the Museum of Modern Art has decided to extend its hours â€" just on Sunday, and just that room â€" keeping it open until midnight, rather than 5:30. Since it opened May 12th on a vacant lot to the West of MoMA on 54th Street, “Rain Room’’ has attracted about 65,000 visitors, some of whom have waited in line for up to nine hours.
