255
6 and 1/2 hours
It would be 7 hours
899 minutes
10 hours and 40 minutes.
2 hours 25 minutes
If you set a timing clock to zero at 9-00pm on Wednesday, by midnight it will have recorded 3-00 hours; we have reached the time which changes from the end of Wednesday to the beginning of Thursday; from there to 1-00am is only 1 hour, so altogether the elapsed time will be exactly 4-00 hours.
There are 6 hours of elapsed time between 9:00 AM and 3:00 PM.
18 minutes
46 minutes have elapsed from 9:59 PM to 10:45 PM.
The elapsed time is 4 hours and 53 minutes.
255
The elapsed time of 1 pm to 9 am is 20 hours.
10 hours
1 hour and 40 minutes.
6 and 1/2 hours
Two hours elapsed time.