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Date Formula: Last business day - 2 of prior month

Posted on 2016-10-19
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Last Modified: 2017-04-19
So I need two date formulas:

1. Calculate the third to last business day of the month (last business day - 2) of the PRIOR month.
2. Calculate the third to last business day of the month (last business day - 2) of the CURRENT month.
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Question by:IO_Dork
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17 Comments
 
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Expert Comment

by:mlmcc
ID: 41850746
Last Month
DateSerial(Year(CurrentDate), Month(CurrentDate), -2)

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CurrentMonth
DateSerial(Year(CurrentDate), Month(CurrentDate)+1, -2)

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mlmcc
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Author Comment

by:IO_Dork
ID: 41850750
but does that handle just business days? or just any calendar day? Needs to calculate based on business days only.
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Expert Comment

by:mlmcc
ID: 41851105
That is just calendar days.

I'll work on it for business days

mlmcc
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Expert Comment

by:James0628
ID: 41851780
Is "business days" just Mon - Fri, or something else?  Are holidays a factor?

 Since you didn't specify, I'm guessing that it's just Mon - Fri, but I thought I'd check.

 James
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Author Comment

by:IO_Dork
ID: 41851941
Correct, Just mon - fri.
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Expert Comment

by:mlmcc
ID: 41851943
DO you have the last day of the month available or do you need to calculate that?

mlmcc
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Author Comment

by:IO_Dork
ID: 41852024
Need to calculate that
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Expert Comment

by:mlmcc
ID: 41852070
Here is the basic formula for 3rd workday

WhilePrintingRecords;
If DayofWeek({Sheet2_.End Of Month}) in [1,2,3] then
    {Sheet2_.End Of Month} - 4
Else if DayofWeek({Sheet2_.End Of Month}) = 7 then
    {Sheet2_.End Of Month} - 3
Else
    {Sheet2_.End Of Month} - 2

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mlmcc
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Accepted Solution

by:
mlmcc earned 500 total points
ID: 41852086
Updated to calculate last day of month based on current date

Name - Last Day Of Current Month
WhilePrintingRecords;
Local DateVar LastDay;
LastDay := DateSerial(Year(CurrentDate), Month(CurrentDate) + 1, 0);
If DayofWeek(LastDay ) in [1,2,3] then
   LastDay  - 4
Else if DayofWeek(LastDay ) = 7 then
    LastDay - 3
Else
    LastDay  - 2

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Name - Last Day Of PreviousMonth
WhilePrintingRecords;
Local DateVar LastDay;
LastDay := DateSerial(Year(CurrentDate), Month(CurrentDate), 0);
If DayofWeek(LastDay ) in [1,2,3] then
    LastDay  - 4
Else if DayofWeek(LastDay ) = 7 then
    LastDay  - 3
Else
   LastDay  - 2

Open in new window


mlmcc
0
 

Author Comment

by:IO_Dork
ID: 41852179
mlmcc:

So I am trying to reference this field in another formula field and I get the following error...will it not be possible to reference the result of this formula field? Ultimately, I need to reference this field to conditionally sum a different field.

screenshot.png
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Assisted Solution

by:mlmcc
mlmcc earned 500 total points
ID: 41852217
Take the WhilePrintingRecords line out of the formulas

mlmcc
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Author Closing Comment

by:IO_Dork
ID: 41852548
thanks, works perfectly!
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Author Comment

by:IO_Dork
ok, so its been a few months since I accepted this solution, but now it does not seem to be working. I ran a report that brought back December 2016 records and the formulas were supposed to calculate the third to last business day of the current month and third to last day of prior month.

December 2016 should have been 12/27 because the last business day was 12/30  - but the formula returns 12/28.

November 2016 should have been 11/25 b/c the last business day was 11/30 and there was weekend in between - but formula returns 11/28.
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Expert Comment

by:mlmcc
How are you figuring the dates?

By your definition above it is working

Dec 2016 - Last working day is 30 Dec 2016 - 2 days is 28 Dec 2016
Same for November.  Last working day is a Wednesday so 30 Nov 2016 - 2 is 28 Nov 2016
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Author Comment

by:IO_Dork
right, I guess I mean 4 days before end of month....i was thinking 3 b/c take 12/27 and add 3days. so what part or parts of the formula should I change to return the 4th to last business day?
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LVL 100

Expert Comment

by:mlmcc
Try this

WhilePrintingRecords;
Local DateVar LastDay;
LastDay := DateSerial(Year(CurrentDate), Month(CurrentDate), 0);
If DayofWeek(LastDay ) in [1,2,3,4] then
    LastDay  - 5
Else if DayofWeek(LastDay ) = 7 then
    LastDay  - 4
Else
   LastDay  - 3

Open in new window

1
 

Author Comment

by:IO_Dork
Thanks, those are the changes I figured would have to be done, but wasn't sure.
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