three
13:00 - 10:00 = 03:00
1 hour, 10 minutes
Assuming this is all in the same day, 8:30 am to 10 pm is 13 and 1/2 hours 8:30 pm to 10 pm is 3 and 1/2 hours
10 pm Thursday to 1 pm Monday should be 87 hours: 10 pm Thursday to Midnight (12 am) Friday = 2 hours Friday = 24 hours Saturday = 24 hours Sunday = 24 hours Monday Midnight (12 am) to Noon (12 pm) = 12 hours Monday Noon (12 pm) to 1 pm = 1 hour Total = 87 hours.
10 & 1/2
10 and 1/2
3 hours without it being more than a day
21 hours
3 hours
8:30 AM to 1 PM = 4.5 hours 8:30 PM to 1 PM = 16.5 hours
From 10:30 AM to 4:30 PM is a total of 6 hours. You can calculate this by counting the hours from 10:30 AM to 4:30 PM, which includes 11:30 AM, 12:30 PM, 1:30 PM, 2:30 PM, 3:30 PM, and finally 4:30 PM. Therefore, the duration is 6 hours.
16 hours(11 pm, 12 midnight, 1 am, 2 am, 3 am, 4 am. 5 am, 6 am, 7 am, 8 am, 9 am, 10 am, 11 am 12 noon, 1 pm, 2 pm, 3 pm.)
IF they're both on the same day, then it's 31/2 hours.