How early do you wake up?

Over the last few years, I have been noticing that my counterparts in Europe are very willing to take up 7 AM meetings (schedules that they themselves suggest, not to avoid any clash). Something we in Bangladesh would find very strange (work here starts after 9, and usually gains pace after 10). Plus, I have rarely ever seen an American counterpart setting up a meeting before 9AM their time.

Is this a cultural thing?