Games : How often do the Diablo 3 forum character profiles update?

Example: http://us.battle.net/d3/en/profile/Rhyinn-1349/hero/11893854

How often does this update? Is it every time you log in to Diablo 3? Is it only during a certain time of day?

I vaguely remember that World of Warcraft armory updates every time you log out, does Diablo 3 work the same way because it doesn't seem like it.