How to calculate - Same day next year

ajhvdb · 2008-10-02

My customer has a special calendar table. He wants a function to copy all records to the next year (but keep the same day).

monday: 1 september 2008 --> monday: 31 august 2009
etc.
friday: 5 september 2008 --> friday: 4 september 2009
etc.

Can i use calcdate for this?

hs_mann · 2008-10-02

Hi

Try using CALCDATE('+52W', YourDate)

Harjot

einsTeIn.NET · 2008-10-02

Take a look at virtual table Date. Could be something like that...

DateRec.SETRANGE("Period Type",DateRec."Period Type"::Day);
DateRec.SETRANGE("Period Start",CALCDATE('<CW + 1Y - 1W>',YourDate),CALCDATE('<CW + 1Y - 1D>'),YourDate);
DateRec.SETRANGE("Period No.",GetPeriodNoOfYourDate);

ajhvdb · 2008-10-02

This one? <CW + 1Y - 1W>

einsTeIn.NET · 2008-10-02

ajhvdb wrote:

This one? <CW + 1Y - 1W>

Current Week + 1 Year - 1 Week
CW returns the last day of the current week.
I didn't test it. Maybe it's

DateRec.SETRANGE("Period Start",CALCDATE('<CW + 1Y - 1W + 1D>',YourDate),CALCDATE('<CW + 1Y>'),YourDate);

You should try it.

DenSter · 2008-10-02

+52W makes most sense to me (haven't actually tried either one).

Savatage · 2008-10-02

Terms = 1year = +52w
I tested it - If i enter an order today 10/02/2008 the due date is 10/01/2009

Terms = 1year = CW+1Y-1W
I tested it - If i enter an order today 10/02/2008 the due date is 09/28/2009

So it looks like your looking for +52W+1D

DenSter · 2008-10-02

Today (October 2 2008) is a Thursday. October 1, 2009 is also a Thursday. If I read the original question right, this is exactly what he's looking for.

Savatage · 2008-10-02

Hmm I guess - I was thinking he wanted 10/02/2008 & 10/02/2009.

Either way he has a choice.
i guess then +1y-1d give you the same answer

Here's a oldie
Navision Data Calculator
http://www.mibuso.com/dlinfo.asp?FileID=514

einsTeIn.NET · 2008-10-02

I guess <+1Y - 1D> and <+52W -1D> will not work because of leap years.
That's why I refered to the Date table.
I think it should be something like that...

Date.RESET;
Date.SETRANGE("Period Type",Date."Period Type"::Day);
Date.SETRANGE("Period Start",YourDate);
Date.FINDFIRST;

Date2.RESET;
Date2.SETRANGE("Period Type",Date2."Period Type"::Day);
Date2.SETRANGE("Period Start",CALCDATE('<CW + 1Y - 1W + 1D>',YourDate),CALCDATE('<CW + 1Y>',YourDate));
Date2.SETRANGE("Period No.",Date."Period No.);
Date2.FINDFIRST;

Then Date2."Period Start" is your new Date. Next year, same day of week.

Savatage · 2008-10-02

I tested +1y-1d worked for both regular & leap years unless we're talking about the DAY OF THE WEEK??

einsTeIn.NET · 2008-10-02

Savatage wrote:

I tested +1y-1d worked for both regular & leap years unless we're talking about the DAY OF THE WEEK??

Yeah, I think he wants to get the same day of the week.

DenSter · 2008-10-02

<+52W> is the answer in my opinion, that is always the same weekday, and 52 weeks is as close as you can get to one year. <+1Y> gives you the same date one year from the start date, which is always a different weekday. <-1D> will always give you problems in case of leapyears. Using the date table should always work, but is much more complex, for exactly the same result as <+52W>.

I guess it should be defined, something like "the date that has the same weekday, that is as close to 1 calendar year from the start date as possible".

ajhvdb · 2008-10-02

Thx, never thought of <+52W>

They are setting up a grow plan for plants. This needs to start the next year again on monday, ...

DenSter · 2008-10-03

Credit goes to:

hs_mann wrote:

Try using CALCDATE('+52W', YourDate)

How to calculate - Same day next year

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