Cats are crepuscular, meaning they're more active at dawn and dusk, but they may be somewhat active at any hour if they have slept enough.

That's possible, too. My cat wasn't like that but I know my friend's cat is banned from the bedroom

6am I am sitting with my half-adopted stray by the heater cause I don't have a cat door and he panics if he wants to leave and I'm not there to open the door

It's -1°C outside so I have to do this... until I get the right gear

my cat isn't noctural. not all cats are the same.

Huh, is it really that unusual for my cat to sleep through the night? She goes to bed around midnight and wakes up closer to dawn naturally, which tends to be a bit late this time of year. That's around when she gets a first meal.