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MS Office Forum / Excel / Worksheet Functions / May 2008

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4 day work week

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Shelly - 28 May 2008 00:19 GMT
What I need to do is have a project start date and an end date and a
duration of days. We work a 4 day work week here and I need to not count
Friday (Sat or Sun) in the duration of the projects. I just need a correct
end date for the projects.

Thanks so much!!!
Bob Phillips - 28 May 2008 01:10 GMT
use this to calculate the working days

=SUMPRODUCT(INT((MAX(end_date,start_date)-WEEKDAY(MAX(end_date,start_date)+1-{2;3;4;5})-MIN(end_date,start_date)+8)/7))

or this if you want to exclude holidays

=SUMPRODUCT(INT((MAX(end_date,start_date)-WEEKDAY(MAX(end_date,start_date)+1-{2;3;4;5})-MIN(end_date,start_date)+8)/7))
-SUMPRODUCT(ISNUMBER(MATCH(WEEKDAY(holidays),{2;3;4;5},0))*(holidays>=MIN(end_date,start_date))*(holidays<=MAX(end_date,start_date)))

Signature

---
HTH

Bob

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

> What I need to do is have a project start date and an end date and a
> duration of days. We work a 4 day work week here and I need to not count
> Friday (Sat or Sun) in the duration of the projects. I just need a correct
> end date for the projects.
>
> Thanks so much!!!
Teethless mama - 28 May 2008 03:12 GMT
A1: start date
A2: end date

=SUMPRODUCT(--(WEEKDAY(ROW(INDIRECT(A1&":"&A2)),2)<5))

> What I need to do is have a project start date and an end date and a
> duration of days. We work a 4 day work week here and I need to not count
> Friday (Sat or Sun) in the duration of the projects. I just need a correct
> end date for the projects.
>
> Thanks so much!!!
Shelly - 28 May 2008 15:32 GMT
I'm very new at this program so please bear with me...I did type the formula
in and it didn't work. I think I am just not putting the right information in
the correct fields. The schedule is set up to have A1 to be the start date
and B1 the finish date. We have multiple units being built at once. They take
10 days to complete, with a 4-day workweek. If you could walk me through
it...that would be so great! And thank you for responding!

> A1: start date
> A2: end date
[quoted text clipped - 7 lines]
> >
> > Thanks so much!!!
Bob Phillips - 28 May 2008 17:58 GMT
If you know the start date, and the end date and how long it takes, what
exactly are you trying to calculate?

Signature

---
HTH

Bob

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

> I'm very new at this program so please bear with me...I did type the
> formula
[quoted text clipped - 19 lines]
>> >
>> > Thanks so much!!!
Shelly - 28 May 2008 18:09 GMT
The end date is what I am trying to get...using a 4 day workweek.

> If you know the start date, and the end date and how long it takes, what
> exactly are you trying to calculate?
[quoted text clipped - 22 lines]
> >> >
> >> > Thanks so much!!!
Bob Phillips - 28 May 2008 18:44 GMT
=start_date+SIGN(days)*SMALL(IF((WEEKDAY(start_date+SIGN(days)*(ROW(INDIRECT("1:"&ABS(days)*10))))={1,2,3,4}),ROW(INDIRECT("1:"&ABS(days)*10))),ABS(days))

Signature

---
HTH

Bob

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

> The end date is what I am trying to get...using a 4 day workweek.
>
[quoted text clipped - 28 lines]
>> >> >
>> >> > Thanks so much!!!
Shelly - 28 May 2008 20:33 GMT
Where do I put this information?

> =start_date+SIGN(days)*SMALL(IF((WEEKDAY(start_date+SIGN(days)*(ROW(INDIRECT("1:"&ABS(days)*10))))={1,2,3,4}),ROW(INDIRECT("1:"&ABS(days)*10))),ABS(days))
>
[quoted text clipped - 30 lines]
> >> >> >
> >> >> > Thanks so much!!!
Bob Phillips - 28 May 2008 20:50 GMT
Anywhere. You just change the variable names to the appropriate cells.

Signature

---
HTH

Bob

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

> Where do I put this information?
>
[quoted text clipped - 37 lines]
>> >> >> >
>> >> >> > Thanks so much!!!
Shelly - 28 May 2008 22:50 GMT
Thank you for your time Bob!

> Anywhere. You just change the variable names to the appropriate cells.
>
[quoted text clipped - 39 lines]
> >> >> >> >
> >> >> >> > Thanks so much!!!
 
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