Normally, it would be 6:30pm/7pm until 4:30am. Nowadays, it's like 12am until 6am/7am with multiple awakenings.
I'm not okay with mine. I mean... it "works," I guess, but I'm often waking up and having to go straight into a video/phone conference for work.
I'm hoping at some point to go back to the 6:30pm/7pm sleep time. That's what's best for me.