113 hours
Friday 11pm to Monday 11pm is exactly 3 days or 72 hours.
60 hours elapse between 6 PM on Friday and 6 AM on Monday.
From Friday at 5 PM to Monday at 8 AM is a total of 61 hours. This includes 43 hours from Friday 5 PM to Monday 8 AM, and 8 hours for the entire Saturday and Sunday.
21 hours
12am to 4pm is 16 hours.
109 hours
It is 65 hours.
72 hrs
24
There are 72 + 168n hours where n is an integer.
From Friday evening to Monday morning, there are a total of about 61 hours. This includes the entire duration of Friday night, all of Saturday and Sunday, and a portion of Monday morning. If you consider Friday evening as starting at 6 PM and Monday morning as 6 AM, that gives you a clear 61-hour span.
12 hours