Index: pdfium/fpdfsdk/javascript/JS_Value.cpp
--- pdfium/fpdfsdk/javascript/JS_Value.cpp.orig
+++ pdfium/fpdfsdk/javascript/JS_Value.cpp
@@ -573,7 +573,12 @@ double _getLocalTZA() {
   long timezone = 0;
   _get_timezone(&timezone);
 #endif
+#ifdef __OpenBSD__
+  struct tm *lt;
+  return (double)(-(lt->tm_gmtoff * 1000));
+#else
   return (double)(-(timezone * 1000));
+#endif
 }
 
 int _getDaylightSavingTA(double d) {
