subtracting date and time formats excluding weekends

[Diane13]

I am trying to figure out how to subtract a cell containing a mm/dd/yyyy
hh:mm format from another cell with the same format and exclude the weekends.


Example:

A1(received): 7/28/06 15:28
A2(submitted): 7/31/06 16:07
A3 The difference in these two dates and times, excluding the weekend, to
determine the total turn around time.

The answer should reflect 1 day and 39 minutes in a format such as d hh:mm
or any other format that would make this easier.

I have the entire list of Excel functions and have tried all of them that I
think are logical but I can't seem to get the correct days and time brought
together into a single cell answer. Any help would be GREATLY appreciated!

I am using Excel 2003.

Thanks!

 

[Bob Phillips]

This should work option 31 days

=NETWORKDAYS(A1,A2)-1+MOD(A2,1)-MOD(A1,1)

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

 

[Bob Phillips]

that should be upto

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

 

[Diane13]

Bob, that worked great except I know have one minor quirk. When the
'received' date happens to fall on a weekend day, I (understandibly) get a
negative result (########). Is there anything I can add to the formula to
prevent these few instances? Possibly an Excel version of the IF, THEN, ELSE
statement?

THANKS!

 

[Diane13]

I think I figured it out. This formula seems to be working -

=IF(NOT(NETWORKDAYS(I2,I2)),J2-I2,(NETWORKDAYS(I2,J2)-1+MOD(J2,1)-MOD(I2,1)))

Thanks for all your help Bob!!!

 

[Bob Phillips]

There seem to be various problems with weekend dates. This seems more robust

=NETWORKDAYS(I2,J2)-((WEEKDAY(J2,2)<6)*1)+IF(WEEKDAY(I2,2)<6,MOD(J2,1)-MOD(I
2,1),0)

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

 

[Diane13]

That formula worked on everything but these four date ranges:

I J
8/19/2006 22:43 8/21/2006 8:22
7/30/2006 16:21 7/31/2006 15:33
7/29/2006 15:16 7/31/2006 7:48
8/27/2006 22:55 8/28/2006 9:17

These all resulted in 0 0:00 and I am not sure why. However, I have what I
need for my project so thank you so much for all your help!!! I would have
never figured out the MOD command on my own. Thanks!

 

[Bob Phillips]

I told you weekedns were a problem <bg>

I think this works for all situations

=NETWORKDAYS(I2,J2)-(WEEKDAY(I2,2)<6)
+(1-MOD(I2,1))*(WEEKDAY(I2,2)<6)
+(MOD(J2,1)-1)*(WEEKDAY(J2,2)<6)

--

HTH

Bob Phillips

(replace xxxx in the email address with gmail if mailing direct)

 

[Colleen10]

Hi Bob,

When I try this formula I get a name error. do you know why?

 

[Bernard Liengme]

Form XL 2003 Help when I search NETWORKDAYS:
If this function is not available, and returns the #NAME? error, install and
load the Analysis ToolPak add-in.

Please come back if more info needed
best wishes

 

[Colleen10]

Thank you...you're right, I forgot about that and I was recently upgrated to
Excel 2003. I still have the name error..would I need to reboot?

 

[Colleen10]

Thank you so much...please disregard my previous email. When I re-typed the
formula, the name error went away however if the results are outside of 24
hours, I get ############ across the cells. Is there a special formatting I
should be using?

 

[Bernard Liengme]

Try Tools | Add-in and if there is an Analysis Toolpak entry, then check its
box.
Then just continue with Excel session

If there is no entry: close Excel and use Control Panel | Add Delete
Programs to change the Office 2003 install such that Analysis Toolpak gets
installed -- might need the disk , can't remember. Restart Excel and use
Tools | Add-in as above

Never a need to reboot

 

[Dave Peterson]

Since you're working with =networkdays(), I would think that General (or some
variation of a Number) would be best.

But try widening the column first. Maybe you just can't see what it's trying to
display (if you have either an error or a number in that cell and the column is
too narrow, you'll see those #####'s).

 

[Colleen10]

Thanks I formatted to general however I did not get the desired results of
displaying the difference...for example, I want to see the difference to
display in hours and minutes. For example 5/19/09 14:15 and 5/19/09 16:56
shud display in a format of 2:41 (2 hours, 41 minutes) or dates if were
5/22/09 9:00 and 5/24/09 9:00 should display as 48:00 (48 hours, zero mins)
Is this even possible?

 

[Bernard Liengme]

Send me a sample worksheet
Please get my email from my website