Is this the result you expected?
if yes, below is my steps:
Create a calculation field: adjusted_Time_Stop as below
and then use this calculation field replace the [Time Stop] in calculation field [Hour_min] you created
DATEPART('hour', [Time Stop]) + (DATEPART('minute', [Time Stop]) / 60.0)
The idea is to switch the time 2 hour back according to your description of 02:00 -02:00(+1day)
Hope this could help. If any question, let me know. I don't have 10.1 but 10.2, if you need the workbook, I can attach for you.
That's fantastic ZZ, thanks alot! Exactly what I need
That's cool. Can you mark my answer as correct answer to close the thread. thanks