Hi Patrick, Thank you for your reply. I want to convert GMT time to the local time of each country, but not sure about the summer time of some special zone. Sorry that I cannot create sas file because I am using sas studio on web :D. And here is the idea of my code: data &out; set &out; if gmt_offset >=0 then localTime=time_g_+hms(gmt_offset,0,0); else localTime=time_g_-hms(abs(gmt_offset),0,0); if localTime ge "24:00:00"t then do date_g_= date_g_+1; localTime=localTime-"24:00:00"t; end; format localTime time.; run; Thank you so much, VT
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