It's totally okay, actually I thought that was a good question. Spells can be cast at any time, but if you have a look around the site, you'll see posts relating to how to use the moon in your magic. Spells can have a higher potency if you do them closer to midnight on a full moon, but it also comes very much down to what you belive a spell can do.
spells can be cast anywhere at any time. some cast by moon phases, or follow a chart indicating which hour throughout the day is better to cast certain spells, but if you need to cast a spell suddenly, don't wait a week for the full moon, if its desperately needed, cast then. i don't recommend casting a spell so you get the last slice of cake or whatever, but if you lost your rent money or a loved one was rushed to hospital, you should cast sooner rather than later. casting really comes down to the amount of energy you have at the time, moon phases and items add to the energy, but if you are against the wall with no other options, you will have a lot of energy and determination built up over if you cast because its a full moon and you're bored. to be honest when i cast its usually in the day because i'm awake, sometimes i've cast at night but its usually around 9, any later and i'd be a yawning mess lol.
hey i liked this question. yes,spells can be casted at night also.some of the spells requier nighttime most.some of the spells used in nighttime are vampire spells,werewolf spells,ghost spells etc... but i still don't belive in vampire and werewolf.