I set the times for a quick demo

• 0:00 -> 0:05 Dawn, changed the colors of sunrise
• 0:05 -> 0:10 Day, full brightness
• 0:10 -> 0:15 Dusk, changed the colors of sunset
• 0:15 -> creatures return home, Night time
• After creatures all despawn (max TTL is 0:30) start Dawn