I don't think it's that unusual, I remember reading somewhere the average circadian cycle for most people is a 25 hour day, that's what mine seems to be. If I let myself I stay up an hour later each night. I usually work up a sleep deficit during the week and catch up on the weekend.

Try the tricks recommended for insomniacs and see if they help, avoid caffeine and alcohol, particularly at night. Only go to bed to sleep, not watching TV. Try getting natural light in the morning to wake up when the sun is coming up.

Try working somewhere else, I've been a programmer for more than 20 years and can't remember when anyone said I had to get in at 9.00 am or whatever, and most developers I've worked with are the same. Become a DBA or administrator working wierd hours is part of the job. 'luck