It initially broadcast in black and white for four hours a day.
The channel launched on 1 June 1999, broadcasting for six hours each day.
It broadcasts for 19 hours a day (05am to 12 midnight).
Every show is broadcast live for four hours every week night and during the afternoon at the weekend.
'Art of Landscape' was eventually broadcast for 6000 hours in 26 countries around the world.
It was launched in January 1980, initially broadcasting for two hours a week.
It is still broadcast for two hours on Friday nights from 7 pm.
It originally broadcast for 18 hours daily, but has been 24-hours since July 2004.
Launched in 2009, it was broadcast for two hours on Saturday evenings.
They were broadcast for 2.5 hours during the evenings.