6 hours, if they're both in the same day.
six 9am to mid-day = 3 hours mid-day to 3pm = 3 hours 3 + 3 = 6
12 hours.
3 hours between 12pm and 3pm
21
The event will run for 6 hours, from 9am to 3pm.
6 hours, if they're both in the same day.
9am, 10am, 11am, 12pm, 1pm, 2pm, 3pm, 4pm, 5pm. 8 hours.
6 hours
The Battle of Hastings lasted from 9am until 3pm (6 hours).
six 9am to mid-day = 3 hours mid-day to 3pm = 3 hours 3 + 3 = 6
9am-3pm, 9pm-3am. The other hours is low tide.
3pm to 10pm is 7 hours.
All of them. 3PM is 24 hours later than 3PM. However, without a frame of reference (a date) all of them could also be regarded as being earlier than 3PM. That is, 9PM last night would be earlier than 3PM today.
The hours of Fall 2013 hours of operation at the Office of Student Services of Boston College are during the weekdays Monday to Friday. The hours are 9am to 5pm unless it is a Friday where it is 9am to 3pm.
13
12 hours.