Coding Requested for Date and Time Difference

Hello Guys,

Can someone tell me the correct coding / systax to find the difference between two date-time infoobjects in hrs and minutes in transformation?

I have following infoobjects -

Arrival Date : 2007.06.16

Arrival Time : 13:00:00

Clearance Date : 2007.03.23

Clearance Time : 10:20:24

I want the difference between the above date and time in hours and mintues like 6hrs 30 minutes.

please suggest some solutions.

thanks,

BI Consultant - Gade