NBC Nightly News is the flagship daily evening television news program for NBC News and is the #1-rated newscast in America. NBC Nightly News airs live from Studio 3B at NBC Studios at 30 Rockefeller Center.
Currently, weekday broadcasts are anchored by Brian Williams, and weekend editions are anchored by Lester Holt. On weeknights, it is broadcast live over most NBC stations from 6:30-7:00 PM Eastern and occasionally updated for Pacific Time Zone viewers in a "Western Edition". Its current theme music was composed by John Williams.