University Challenge (NZ) is a tv show that aired a long time ago in NZ, but had a revival for 3 seasons starting in 2014. Actually, my friend from school appeared in it.
It aired on Prime. However, with the exception of one upload on YouTube the episodes themselves are now nowhere to be found online (I watched them on whatever official website they uploaded them in- at least the season I tuned in to- the last season )
Anyway, I've only really found two sources of information for episodes: 1) wikipedia: https://en.wikipedia.org/wiki/University_Challenge_(New_Zealand_TV_series)
and 2) what I think is a (probably government) official archive website called ngataonga: https://www.ngataonga.org.nz/collections/search?commit=Go&text=university+challenge&utf8=%E2%9C%93%5C&i[media_type]=FILM%20AND%20VIDEO&i[place_of_production]=NEW%20ZEALAND/AOTEAROA&or[genre]=TELEVISION%20HARVEST&or[genre]=TELEVISION&i[source]=Moving%20Image%20Collection
Would it be enough for TMDb if I were to find the archive to be completely matching with the records on wikipedia (i.e. if I found there to be exactly the same number of archived files of recorded episodes of University Challenge NZ all of which are recorded with the same date as noted in wikipedia would that be good enough to use as air dates?).
Other information that this show did exist:
Official Facebook: https://www.facebook.com/universitychallengenz/
Tweets from the network: https://twitter.com/search?l=&q=University%20Challenge%20from%3APrimetv_NZ&src=typd&lang=en
Wayback Machine Showing that it aired on the network: https://web.archive.org/web/20161115132019/https://www.primetv.co.nz/ (click on "Sat" under "What's On")