Fixed date issue

Author: ArnauPrat

src/main/java/ldbc/socialnet/dbgen/generator/DateGenerator.java

@@ -113,6 +113,7 @@ public static String formatDate(GregorianCalendar c)
 
         c.setTimeZone(TimeZone.getTimeZone("GMT"));
         SimpleDateFormat gmtDateFormatter = new SimpleDateFormat("yyyy-MM-dd");
+        gmtDateFormatter.setTimeZone(TimeZone.getTimeZone("GMT"));
         return gmtDateFormatter.format(c.getTime());
 	}
 
@@ -161,6 +162,7 @@ public static String formatDateDetail(GregorianCalendar c)
 			   */
         c.setTimeZone(TimeZone.getTimeZone("GMT"));
         SimpleDateFormat gmtDateFormatter = new SimpleDateFormat("yyyy-MM-ddHH:mm:ssZ");
+        gmtDateFormatter.setTimeZone(TimeZone.getTimeZone("GMT"));
         return gmtDateFormatter.format(c.getTime());
 	}