That day and night thing is easy, but it annoys people. Anyways I wasn't working on this for long. I added 2 NPCs: Teleport npc and say npc. And I added zones.
Yep, i know yates. But it would be easy if you do it with lua (with some methods). And with that, you'll not puting 48 day entities, (1 sprite ent, 1 delay ent each hour)
You don't really need to do that, use the ingame editor.
It's accesable with the right z or s in the CT menu button Restart/Reload, edit map_name_auto.txt
( map_name is the name of your map )