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# Add a Year to a Date Macro

I have a macro like:

%let startYear = '1Jul2015:0:0:0'dt;

How can I add a year to the macro? All the examples I have seen have added a year in the dataset rather than the macro.

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‎11-24-2015 09:00 AM
Posts: 3,054

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2

Oh, duh, that should have been obvious but I guess I misread your question.

%let incr_by_one_year=%sysfunc(intnx(dtyear,&startyear,1,s));

%put incr_by_one_year %sysfunc(putn(&incr_by_one_year,datetime16.));

--
Paige Miller

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Posts: 3,054

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2

I don't understand the question. Your example already has a year in it.

(And we're talking about a macro variable, not a macro, right?)

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Paige Miller
Valued Guide
Posts: 619

## Re: Add a Year to a Date Macro

Posted in reply to PaigeMiller

How can I increment a macro variable by one year?

Solution
‎11-24-2015 09:00 AM
Posts: 3,054

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2

Oh, duh, that should have been obvious but I guess I misread your question.

%let incr_by_one_year=%sysfunc(intnx(dtyear,&startyear,1,s));

%put incr_by_one_year %sysfunc(putn(&incr_by_one_year,datetime16.));

--
Paige Miller
Super User
Posts: 13,583

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2

Is there any particular reason you call a datetime value a date?

Valued Guide
Posts: 619

## Re: Add a Year to a Date Macro

date would be better

Super Contributor
Posts: 275

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2
``````%let startYear ="1Jul2015:0:0:0"dt;
%let newstarYear=%sysfunc(putn(%sysfunc(intnx(dtyear,&startYear,1,s)),datetime19.));
%put &newstarYear;``````
Super User
Posts: 9,599

## Re: Add a Year to a Date Macro

Posted in reply to DavidPhillips2

Personally I would never use macro varaibles (which are text) for manpulating or using date/time numeric data.  I would put them in a parameters dataset, and call them up when needed.  Two beneifts, you can manipulate them using the full simple syntax of base SAS, and they are accessible in numerous manners (i.e. call symput, join/merge, call execute).

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