The television series "Supernatural" first aired in 2005 and ended in 2020, not in 1977. It ran for 15 seasons and gained a large fanbase over the years for its portrayal of two brothers hunting supernatural creatures.
The Squirrels - TV series - ended on 1977-02-10.
The Jacksons - TV series - ended on 1977-03-09.
Sunday Pops Series ended on 1977-09-04.
Bluff - TV series - ended on 1977-04-27.
Serpico - TV series - ended on 1977-01-28.
The Box - TV series - ended on 1977-04-01.
Marc - TV series - ended on 1977-09-28.
The Oregon Trail - TV series - ended on 1977-11-30.
All That Glitters - TV series - ended on 1977-07-15.
The Outsiders - Australian TV series - ended on 1977-02-01.
The New Avengers - TV series - ended on 1977-12-17.
Its already started but its on every Sunday and its getting close the end of the series already.