Time and Date Calculation

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

date and time in a1 and b1
formula in c1 is

Code:

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=a1-b1

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format the cell to date

You can combine the cells too...
a1 b1 Date and time
a2 b2 Date and time
c1 formula

Code:

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=(b1-b2)+(a1-a2)

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There is a formula that can be used, which is not included in help topics.

=DATEDIF(date1, date2,[time unit])

for example, to get the number of months between two dates you write:

=DATEDIF(date1, date2,"m")

It seems to me that you can combine dates and times

a1 b1 Date and time
a2 b2 Date and time

c1 formula

Code:

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a1+b1

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c2 formula

Code:

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a2+b2

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then to take the difference in c3 just subtract
c3 code

Code:

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c2-c1

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make sure that c3 is formatted to display in pertinent units, like time format listed as "37:30:55" which will display the difference in hours/min/seconds

I have verified this and think I think that it works. Agreed?