Saturday Night Live, while other stations carry syndicated reruns. Sunday evening is generally treated as a regular weeknight, with popular prime time programs airing. In the United States and Canada, prime time network programs start one hour earlier on Sunday evenings (6:00 or 7:00 p.m., depending on the time zone) than on Monday through Saturdays, an exception to the since-repealed Prime Time Access Rule as part of a 1975 revision that allowed networks to program the time slot on Sundays. No network programming currently airs in the Sunday late night slot. United Kingdom Weekdays on the major British channels generally consist of breakfast programming (on BBC One, ITV and Channel 5) or comedy programmes (on Channel 4), followed by game shows, soap operas and lifestyle programmes during the day. Channel 4 has also had consistent success with late-afternoon game shows; Countdown, airing daily since the network's launch, has been one of the network's most popular programs. In the UK, Saturday night prime time is usually devoted to entertainment programming such as reality talent shows such as The X Factor or Britain's Got Talent on ITV and Strictly Come Dancing on the BBC or drama programmes such as Doctor Who on the BBC. Unlike other regions, such as the United States and Canada, some programs aired during Saturday primetime in the UK achieve strong viewership levels. ITV and BBC both have long-running traditions of broadcasting a flagship television show on Sunday evenings. Examples include Downton Abbey, Victoria and Poldark. In recent years, long-running classic dramas have been increasingly broadcast during primetime, often more than 1 time per week. Primetime generally starts and finishes earlier (6pm to 10pm starting times). Primetime's two main slots are the 8pm and 9pm shows, whilst 7pm and 6pm shows are often popular shows and 10pm showings being for shows of a more adult nature, though not necessarily explicit. Adult shows such as explicit and horror programs are usually shown on second channels (ITV2 and BBC Two) as soon as Ofcom allows, rather than in the small hours like in some countries. There are also many channels largely dedicated to replaying now-axed popular shows from the past, such as Agatha Christie's Poirot, The Bill, London's Burning and 'classic' EastEnders. Australia In Australia, dayparting is not as complex. The breakfast television slot is generally seen as 6:00 to 9:00 a.m., although two of the three major networks have