Board Thread:General Discussion/@comment-5486221-20140803122944/@comment-1622149-20140803172928

Blaziken rjcf wrote: Time on TV shows/series/whatever is a strange thing. Dragon Ball Z took three episodes, IIRC, to go through five minutes. Supernatural took one episode to go through a few months. The OS spanned four years, if I'm not mistaken, but only one year actually passed in the series.

I don't think the writers put much thought into it, to be honest. OS only passed summer which less than a year.