The weekend editions of "Today" are anchored by Peter Alexander and Kristen Welker on Saturdays, and by Willie Geist on Sundays. Peter Alexander was named co-host on October 27, 2018. Kristen Welker was named co-host on January 11, 2020. Meteorologist Dylan Dreyer delivers the forecast on Saturday (there are no national weather segments on Sundays). Occasionally, Kate Snow, Hallie Jackson, Morgan Radford, Frances Rivera, Harry Smith, Jose Diaz-Balart, Dave Price and Willie Geist fill-in for Welker and Alexander, Hallie Jackson, Harry Smith, Kristen Welker, and Morgan Radford fill-in for Geist. NBC meteorologists Bill Karins, Dave Price, Maria LaRosa and Indra Petersons fill-in for Dreyer. Joelle Garguilo is a correspondent for "Weekend Today". "Scherzo for Today" was used as the program's closing theme until 1990, and the "Mission" bumpers were used until 1993 (one of them could be heard as a station break lead-in on NBC's "Meet The Press" until 2004). The "Scherzo for Today" theme was iconically accompanied by Fred Facey announcing "From NBC News, this is "Today"..." until his death in April 2003, except for special editions requiring special introductions. Facey's work afterwards was only heard on the now-defunct MSNBC program "Headliners and Legends". For a time early in the original "Sunday Today" run; the "Scherzo for Today" theme was preceded by a recap of clips of stories from the previous week set to "Freightways" by Graham De Wilde. The "Mission" cut used as the opening fanfare for "Today" has opened the program ever since, with two exceptions: in the summer of 1994, to mark the debut of Studio 1A, the John Williams-composed fanfare was replaced by another opening theme, but the Williams theme returned shortly thereafter. In 2004, the show's producers tried out yet another theme, which drew once again on the NBC chimes as its signature, but the Williams theme returned after only a few weeks. It is by far the most enduring theme in the program's history, having been in use for over two decades. In March 2013, "The Mission" was replaced with a theme by Adam Gubman for Non-Stop Music, which is based partly on the "Mission" theme. A lighter theme employing the NBC chimes is currently used to open the show's 7:30 and 8:30 a.m. half-hour segments, and is also used as a closing theme.