12 hours.
6
6 hours and 40 minutes, or 6 and 2/3 hours.
2 days 6 hours
6
6 and 1/2 hours
1224
6 hours
2 hours.
4:30am to 6:30am is 2 hours. 4:30am to 6:30pm is 14 hours. 4:30pm to 6:30pm is 2 hours. 4:30pm to 6:30am is 14 hours.
6
6 of them.
About 6 1/2 hours.