Time Hours/Minutes before and after Midnight

[The Animal]

Hi
I have cells J2 (start time) and K2 (finish time)
I need to calculate the time elapsed between the two cell values in hours and minutes but some will be start AM and finishing AM but some will be starting AM but finishing PM.
The format of the start/finish is h:mm AM/PM

Any help would be great
Stephen

 

[Logit]

.
Include the date along with the time.

 

[AhoyNC]

Here is one way.

Excel Workbook
	A	B	C
1	8:00 AM	10:30 PM	14:30
2	10:30 PM	2:45 AM	4:15
Sheet

 

[The Animal]

Thanks for your help.
But cannot include date in formatting and would like the same generic formula that identifies if if before or after midnight start/finish.
Stephen