Periodic dangers

This can be that (certain) enemies become active during a specific time of day, such as undead or other dangerous predators being active during the night. Or that a certain time of day increases their numbers significantly.

Not so much relevant if this is only barely noticeable difference.

Editor note: like with circadian cycle tag, the tag name is technically incorrect, but due to lack of any other word that indicates things that happen within a single day without being a word monster or otherwise limited in scope, this is the best we have for now.