My question is: are there any spells/items/or anything really that can alter the time of day, from night to day, or the opposite?
Perhaps there's something that can create some sort of light source that acts as a sun and can block the moon light. And on the other hand, perhaps there's something that can block the sun, and act as a moon, giving less light.
Or, if we're going to mess with reality, perhaps something that can literally change the time of day and make the sun/moon appear.
Character Concept that needs this
I want to create a character with day disadvantage and night advantage. It has wolf traits, so during the day (or whenever there is no moon, for example if they are in a cave) they are weaker, and when the moon is visible (for example- in a forest during night) they are stronger. Also, during a full moon they go crazy.
I figured that I could use something that will make it nighttime when it's actually daytime to give them the advantage (assuming they're in a place where the moon is visible); or use something to make it daytime so they won't go crazy when there's a full moon.
Does a game feature, or item, that will do this exist in the published material?