starts at 10:00 a.m. AST), but tape delays the telecast elsewhere in the continental U.S. and territories from the Central Time Zone westward to allow the program to air in the same 9:00 a.m. to 12:00 p.m. timeslot across its owned-and-operated and affiliated stations (except for Guam, which airs it the day after Thanksgiving at 9:00 a.m. local time, as the territory is located west of the International Date Line and therefore a day ahead from the rest of the United States); since the morning program's expansion to three hours in 2000 (it eventually expanded to four hours in 2007), NBC's Today only airs for two hours on Thanksgiving morning, pre-empting the last two talk-focused hours of the show for the day. NBC began airing a same-day afternoon rebroadcast of the parade in 2009 (replacing the annual broadcast of Miracle on 34th Street, which NBC had lost the broadcast television rights to that year). CBS's unauthorized coverage airs live in most time zones, allowing viewers to see the parade as much as two hours before the official NBC coverage airs in their area; CBS still broadcasts the parade on delay on the West Coast, immediately after the Detroit Lions Thanksgiving game in even-numbered years when CBS carries it, or at 9:00 a.m. local time in odd-numbered years when they carry the Dallas Cowboys Thanksgiving game. From 1963 to 1972, NBC's coverage was hosted by Lorne Greene (who was then appearing on NBC's Bonanza) and Betty White. David Hartman and Karen Grassle hosted the parade in 1974, With Ed McMahon serving as a man on the street host, He would become a main host in 1977, until 1981. Since 1982, NBC has appointed at least one of the hosts of Today to emcee the television broadcast, starting with Bryant Gumbel, who hosted the parade until 1984. From 1987 to 1997, NBC's coverage was hosted by longtime Today weather anchor Willard Scott. During that period, their co-hosts included Mary Hart, Sandy Duncan, and Today colleagues Deborah Norville and Katie Couric. In recent years, NBC's coverage has been hosted by Today anchors Matt Lauer (from 1998 to 2017), Meredith Vieira (from 2006 to 2010), Ann Curry (2011), Savannah Guthrie (since 2012) and Hoda Kotb (since 2018) as well as Today weather anchor Al Roker who usually joins the producers of the parade or the CEO of Macy's and special guests in the ribbon