(6 hours) x (60 minutes per hour) x (60 seconds per minute) = 21,600 senconds
3600
24 of them.
86
6 hours from 4pm to 10pm
how many hours is 6:30pm to 6:30am
6 hours = 21,600 seconds
there are 144 hours in 6 days.
144 hours. (24*6).
There are 21,600,000 milliseconds in 6 hours.
(12k + 6) hours where k is an integer.
12 hours.
153 hours in 6 days and 9 hours! :-)