C-Day
C-Day is the name of two television-related events: 1 March 1975, when Australia moved to regular colour television, and 1 July 2000, the day the UK television industry began accepting only widescreen commercials, an important step in the general move of broadcasting in the UK to the picture format. == Colour television in Australia == Australia was somewhat late in introducing colour television, to choose the correct television system, waiting about 8 years from the time PAL was invented.