Kevin,

Can you give me an example that errors. I tried it with your examples,
including 08:25-04:25 and got the same results as you predicted.

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HTH

Bob


(there's no email, no snail mail, but somewhere should be gmail in my addy)



"kevcar40" wrote in message
...
On 31 Jan, 10:24, "Bob Phillips" wrote:
This seems to work

=MOD(D20-C20,1)-((AND(C20<=TIME(2,0,0),(D20=TIME(2,30,0))))+(AND( C20<=TIME*(10,0,0),(D20=TIME(10,30,0))))+(AND(C20 <=TIME(18,0,0),(D20=TIME(18,30,0))*))
+(AND(C20D20,D20=TIME(2,30,0))) )*TIME(0,30,0)

--
---
HTH

Bob

(there's no email, no snail mail, but somewhere should be gmail in my
addy)

"kevcar40" wrote in message

...



Hi
I have a worksheet containing time faults occur
ie
Start time End Time
06:23:12 07:23:12
08:10:23 12:10:23
08:25:10 04:25:10

what i am looking to do is subtract the start time from the end time
and exclude break times
ie
break 1 10:00:00 to 10:30:00
break 2 18:00:00 to 18:30:00
break 3 02:00:00 to 02:30:00

End Time Start time
07:23:12 - 06:23:12 = 01:00:00
12:10:23 - 08:10:23 = 03:30:00
19:15:00 - 15:15:20 = 03:30:00
20:10:23 - 08:10:23 = 09:00:00
04:25:10 - 08:25:10 = 18:30:00

any ideas on a formula

thanks

kevin- Hide quoted text -

- Show quoted text -

Bob
Thanks for Formula
I have a slight ploblem with it
the formula works fine unitl the end time goes past 00:00:00
then it returns wrong answer it is out by 1 hour
it works fine when both start and end time are after 00:00:00
i have played with formula but getting nowhere
any ideas?

thanks

kevin