im pretty sure its 9 hours.
most go for 6 hours a day 9 till 3
9 am to 11 am is two hours.
its DOES and yes usaually 9 till 6:30
153 hours in 6 days and 9 hours! :-)
The difference between 6 and 9 hours is 3 hours. If you're asking for the duration from 6 to 9, it is also 3 hours.
1490
153 hours
9 hours
15 hours
9
three
6