diff -up at-3.1.18/parsetime.y.dst at-3.1.18/parsetime.y

--- at-3.1.18/parsetime.y.dst	2015-12-06 16:45:10.000000000 +0100

+++ at-3.1.18/parsetime.y	2015-07-01 13:53:14.088881926 +0200

@@ -476,8 +476,8 @@ parsetime(time_t currtime, int argc, cha

     exectm = *localtime(&currtime);

     currtime -= exectm.tm_sec;

     exectm.tm_sec = 0;

-    exectm.tm_isdst = -1;

     memcpy(&currtm,&exectm,sizeof(currtm));

+    exectm.tm_isdst = -1;

     time_only = 0;

     yearspec = 0;

@@ -503,8 +503,8 @@ parsetime(time_t currtime, int argc, cha

 	    return 0;

 	if (isgmt) {

 	    exectime -= timezone;

-	    if (currtm.tm_isdst && !exectm.tm_isdst)

-		exectime -= 3600;

+	    if (exectm.tm_isdst)

+		exectime += 3600;

 	}

 	if (exectime < currtime)

 		panic("refusing to create job destined in the past");