'Saturday Night Live' to air live nationwide For the first time in 42 seasons, "Saturday Night Live" will air live from New York across all mainland U.S. time zones, NBC announced Thursday. "That way, everyone is in on the joke at the same time," NBC Entertainment chairman Robert Greenblatt said in a statement. Fans in Mountain and Pacific time zones have, until now, had to watch the show on tape delay. SNL's new simulcast will debut April 15 with the return of former cast member and "The Tonight Show" host Jimmy Fallon. --- It should be interesting to see what they do to handle the difference between what one can do on TV at 11:30 vs what one can do on TV at 8:30.