Day/Night Cycles: How long are they?

[Stuey]

Im planning on timing this out today/tonight, but before i go through the trouble, i was wondering if anyone else slready has this information?

Its nothing vital, i was just curious ;w;

[SoulRevenge]

I beleive they're either thirty minutes each, or two hours each.
Someone said it in total, it lasts for four hours, but I'm not that sure because someone also mentioned just an hour.