ASX Trading Hours
I think the 10am start has more to do with giving brokers, analysts and fund managers more time in the mornings to gather their thoughts and strategies for the day over their lattes and scones than with banking hours. Also the the various state time zones probably has an influence on the market opening time as well.
With T+3 and overnight electronic transfers I doubt the ASX trading hours has anything to do with banking hours.
I also think the 4pm close is there partly to give brokers an hour or so to contact their clients about the status of their orders, give advice etc etc during business hours.
