well i have data like this in four cells

date1 time1 date2 time2

this data is in different cells . is it possible that i can have some formula which could actually count the difference between two times .. in hours/minutes/seconds .. considering the date aswell since time1 is on date1 and time2 is on date2 .. so all i need is the duration inbetween time1 and time2

Regards