I woke at 10.30am today, yay! Can't remember what time I went to bed though.
When I was at work, once I got into my mid-forties, I was usually in bed by 11pm at the latest and always woke spontaneously between 4.30 and 5am, even at weekends. It was a real drag! Now I have adjusted thankfully. I can get up early easily enough if there is a reason for it.
My husband has to be up at 5.30-6am on week days but at weekends or on days off it's generally 9+, he really appreciates a lie in.