NOON state

When the clock says "noon," it means it's the middle of the whole day - not morning, not night, but right in the middle. A "noon state" could mean different things depending on the context, but if you're talking about something that's "in a noon state" or "at its noon state," it might mean that it's in the best possible condition, just like how noon is the middle of the day when the sun is at its highest point in the sky and things are bright and sunny. It's like if you were playing a game and you were doing really well, you could say you're at your noon state - you're in the best possible position you can be in.