"An archaeology professor discovers an ancient crypt which contains living dead corpses. The zombies go on a rampage and attack a group of people which the professor had invited to celebrate his discovery."
This is my favorite b movie of all time. Got it on VHS from an older friend for 5€ when I was in "high school". Its German title is "Rückkehr der Zombies", which means "Return of the Zombies". Here is what the cover looked like, roughly. It's an incredible mix of bad acting, nonsensical setups, confused pacing and surprisingly good makeup and gore. The best part is the kid, who is supposed to be a teenager at most, but is clearly played by a small adult (see here).
If you are a fan of b movies, especially Horror and splatter, this is a must see!
(Also: I love this community!)
https://youtu.be/vUl7sjHLL-Q?si=dvHPT-0-2J84Vyy_
Haha, yeah. I don't think the moon or its redness plays any role in the movie at all.