Night owl, yep.
Get a lot done when others are sleeping
I prefer and need a quiet environment for thinking
I like sunny days; not crazy about cloudy, rainy ones. But to me, darkness helps with thinking, concentration - sometimes even energy. When the Sun is shining, everything seems so ‘busy’, and distracting - and frankly, it takes me a while to get going in the morning :-).
I do very different things when it’s light and when it’s dark. I guess there’s something electromagnetic going on.