Personally I went from being a night owl (0100 or 0200 -> 0800 or 0900) to being an early riser (2130 -> 0500).

0900 is historically the beginning of the business day. "Bankers hours" start at 0800. Traditional businesses expect people to be at the office by then so I would think you would need to rise by 7 or 8 at the latest to be "normal". An early riser would be getting up a few hours before that.

Also in pretty much all parts of the world you've missed the sunrise by 9AM. Not really an early riser if the sun is fully risen before you wake.