https://communities.sas.com/t5/SAS-Procedures/How-to-center-returns-around-a-specific-date/m-p/32622#M7880 Suppose I have a large sample data, that has two different date values for each firm. An announcement date and a trading date. I need to write a code that only extracts 12 days prior and 12 days after the announcement date - for each individual cusip and announcement dates. Moreover, some cusips (firms) have several announcement dates, which complicates the problem. Any help or suggestions would be greatly appreciated.<BR /> <BR /> Josh Message was edited by: JP%5 Sat, 19 Jul 2008 19:00:32 GMT deleted_user 2008-07-19T19:00:32Z https://communities.sas.com/t5/SAS-Procedures/How-to-center-returns-around-a-specific-date/m-p/32622#M7880 Suppose I have a large sample data, that has two different date values for each firm. An announcement date and a trading date. I need to write a code that only extracts 12 days prior and 12 days after the announcement date - for each individual cusip and announcement dates. Moreover, some cusips (firms) have several announcement dates, which complicates the problem. Any help or suggestions would be greatly appreciated.<BR /> <BR /> Josh Message was edited by: JP%5 Sat, 19 Jul 2008 19:00:32 GMT https://communities.sas.com/t5/SAS-Procedures/How-to-center-returns-around-a-specific-date/m-p/32622#M7880 deleted_user 2008-07-19T19:00:32Z https://communities.sas.com/t5/SAS-Procedures/How-to-center-returns-around-a-specific-date/m-p/32623#M7881 Nevermind, I have figured it out. Sun, 20 Jul 2008 00:26:52 GMT https://communities.sas.com/t5/SAS-Procedures/How-to-center-returns-around-a-specific-date/m-p/32623#M7881 deleted_user 2008-07-20T00:26:52Z