nickelodeon (often shortened to nick) is a worldwide cable television network. airing sundays-fridays from 7 a.m.-8 p.m. and saturdays from 7 a.m.-9 p.m. it is made for children. the network was started in 1983 as pinwheel. during the late mornings and afternoons, nickelodeon shows nick jr.. this is a group of learning programs and series for younger children. they are shown while the older children are in school. at night, the network shows nick @ nite. nick at nite is a group of reruns of older series that parents watched when they were younger.