Year range Godzilla (the cartoon :))

Currently, Godzilla (https://www.imdb.com/title/tt0177814/reference/) has a year range of 1978-1980. 

However, as you can see, all episodes on IMDb are from 1978-1979.

Epguides.com also states the series ran from 1978-1979: https://epguides.com/Godzilla_1978/ 

So does TMDB: https://www.themoviedb.org/tv/5246-godzilla/season/2 

Can a staffer correct this please?