Difference between 9am and 9pm

How many hours between 9am and 9pm?

Answer

The difference between 9am and 9pm is

12 Hours

= 720 Minutes · 12 decimal hours

9:00 AM → 9:00 PM the same day · by the clock, breaks not subtracted

With a 30-min unpaid break: 12 h − 30 min = 11 h 30 min paid

9:00 AM — start 9:00 PM — end

9:00 PM − 9:00 AM = 12 hours

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start ↓ end →	7pm	8pm	9pm	10pm	11pm
7am	12 h	13 h	14 h	15 h	16 h
8am	11 h	12 h	13 h	14 h	15 h
9am	10 h	11 h	12 h	13 h	14 h
10am	9 h	10 h	11 h	12 h	13 h
11am	8 h	9 h	10 h	11 h	12 h