Convert GMT datetime to local

Question

I have a datetime value in GMT timezone. How can I convert it to my local timezone? I would expect there to be a function for this. Please note that I can not just add or subtra

Answer 1

I have a datetime value in GMT timezone. How can I convert it to my local timezone? I would expect there to be a function for this. Please note that I can not just add or subtract the difference, because of the summertime.

There is a function for that:

TZONEU2S Function Converts a UTC date time value to a SAS date time value. http://documentation.sas.com/?docsetId=nlsref&docsetTarget=n1ien0skr1u9swn1f00w7hizdg9c.htm&docsetVersion=9.4&locale=en

When you specify a zone ID, the time zone that SAS uses is determined by the time zone name and daylight savings time rules.

Example:

data;
  do d = 20 to 30;
    date = '28FEB2018'd + d;
    dt = dhms(date, 12, 0, 0);
    dt2 = tzoneu2s(dt,'EUROPE/LONDON'); 
    output;
  end;
  format date E8601DA. dt dt2 E8601DT. ;
run;

proc print;
run;