Weather.com is the online version of the Weather Channel, the 24-hour cable and satellite television channel launched in 1982 and now available in 86 million American households.
Sky One viewers see the hour-long special first while viewers without cable or satellite will have to wait a few months more until it pops up in the terrestrial run on Channel 4.
That was used to aid in the launch of four experimental satellites over the course of the 1960s and 1970s, the last of which was the first satellite to fly in the GPS 12-hour orbit and the first transmit GPS signals.