topic Taking variables from the same data set to create a calendar date in SAS Procedures https://communities.sas.com/t5/SAS-Procedures/Taking-variables-from-the-same-data-set-to-create-a-calendar/m-p/10658#M1051 Hello, I am new to SAS. I am trying to take variable bdate and add it to variable LOS1 to get an actual date. The data for both variables are in days. Can someone help me?<BR /> <BR /> Thanks,<BR /> Peewee Tue, 15 Feb 2011 22:05:33 GMT peewee 2011-02-15T22:05:33Z Taking variables from the same data set to create a calendar date https://communities.sas.com/t5/SAS-Procedures/Taking-variables-from-the-same-data-set-to-create-a-calendar/m-p/10658#M1051 Hello, I am new to SAS. I am trying to take variable bdate and add it to variable LOS1 to get an actual date. The data for both variables are in days. Can someone help me?<BR /> <BR /> Thanks,<BR /> Peewee Tue, 15 Feb 2011 22:05:33 GMT https://communities.sas.com/t5/SAS-Procedures/Taking-variables-from-the-same-data-set-to-create-a-calendar/m-p/10658#M1051 peewee 2011-02-15T22:05:33Z Re: Taking variables from the same data set to create a calendar date https://communities.sas.com/t5/SAS-Procedures/Taking-variables-from-the-same-data-set-to-create-a-calendar/m-p/10659#M1052 SAS system architecture uses numeric variables for representing DATE (days since 1/1/1960) and DATETIME (seconds since same date at midnight) values.<BR /> <BR /> Also, there are various SAS functions to use with these variables for increment/decrement and manipulation, such as INTCK, INTNX.<BR /> <BR /> It's likely your external date/datetime fields must be converted, using a SAS INFORMAT or the INPUT function with a suitable INFORMAT.<BR /> <BR /> Suggest you may also want to search the SAS forum archives as well as using the SAS support <A href="http://support.sas.com/" target="_blank">http://support.sas.com/</A> website where there is SAS-hosted documentation and supplemental technical / conference materials (extensive) on the topic.<BR /> <BR /> Scott Barry<BR /> SBBWorks, Inc.<BR /> <BR /> Suggested Google advanced arguments, this topic / post:<BR /> <BR /> introduction date datetime site:sas.com<BR /> <BR /> intnx intck function site:sas.com<BR /> <BR /> data step programming introduction site:sas.com Tue, 15 Feb 2011 22:20:36 GMT https://communities.sas.com/t5/SAS-Procedures/Taking-variables-from-the-same-data-set-to-create-a-calendar/m-p/10659#M1052 sbb 2011-02-15T22:20:36Z