I don't know if I'm right on this but it seems me that the time a baby/toddler wakes seems to depend on where he/she lives in the world!
There are lots of bubs around here (Northern Beaches, Sydney), my DD included, who wake between 6-6.30am every day.
However, we went to the UK for 6 weeks recently, and she was sleeping until 7-7.30am every day :!: :?: :!:
Lots of posts from those in Canada say their LOs wake at 8am or later!!!
Where do you live and what time does your LO wake in the morning?