Complex sentence: The "Wogan" show was initially broadcast on Tuesday evenings on BBC1 in 1981 and from 1982 to 1984, it moved into the "Parkinson" slot on Saturday nights.
Split into simpler sentences: The "Wogan" show was initially broadcast on Tuesday evenings on BBC1 in 1981. From 1982 to 1984, it moved into the "Parkinson" slot on Saturday nights.