diff --git a/MiniScript-cpp/src/DateTimeUtils.cpp b/MiniScript-cpp/src/DateTimeUtils.cpp
index 8cf5984..0bc1b18 100644
--- a/MiniScript-cpp/src/DateTimeUtils.cpp
+++ b/MiniScript-cpp/src/DateTimeUtils.cpp
@@ -307,6 +307,7 @@ time_t ParseDate(const String dateStr) {
 		dateTime.tm_mon = now.tm_mon;
 		dateTime.tm_mday = now.tm_mday;
 	}
+	dateTime.tm_isdst = -1;
 	return mktime(&dateTime);
 }
 
diff --git a/MiniScript-cpp/tests/testDaylight.ms b/MiniScript-cpp/tests/testDaylight.ms
new file mode 100644
index 0000000..7a7380d
--- /dev/null
+++ b/MiniScript-cpp/tests/testDaylight.ms
@@ -0,0 +1,14 @@
+import "qa"
+
+testDaylight = function
+	
+	// This test always only tests a half of functionality depending on whether the host system has "daylight savings" on or off.
+	
+	d = "2000-01-01 11:00:00"
+	qa.assertEqual _dateStr(d, "%H"), "11"
+	
+	d = "2000-07-01 11:00:00"
+	qa.assertEqual _dateStr(d, "%H"), "11"
+end function
+
+if refEquals(locals, globals) then testDaylight