diff --git a/interface/wx/datetime.h b/interface/wx/datetime.h
index 82624aa87b..f38ad46596 100644
--- a/interface/wx/datetime.h
+++ b/interface/wx/datetime.h
@@ -566,6 +566,15 @@ public:
     */
     time_t GetTicks() const;
 
+    /**
+        Returns the number of milliseconds since Jan 1, 1970 UTC.
+
+        Directly returns the internal representation of wxDateTime object as
+        the number of milliseconds (positive or negative) since the Unix/C
+        epoch.
+     */
+    wxLongLong GetValue() const;
+
     /**
         Returns broken down representation of the date and time.
     */