diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index 36f702b827a9..df9992ea5762 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -5706,6 +5706,32 @@ JS_SetErrorReporter(JSContext *cx, JSErrorReporter er)
 
 /************************************************************************/
 
+/*
+ * Dates.
+ */
+JS_PUBLIC_API(JSObject *)
+JS_NewDateObject(JSContext *cx, int y, int m, int d, int h, int m, int s)
+{
+    CHECK_REQUEST(cx);
+    return js_NewDateObject(cx, y, m, d, h, m, s);
+}
+
+JS_PUBLIC_API(JSObject *)
+JS_NewDateObjectMsec(JSContext *cx, jsdouble msec)
+{
+    CHECK_REQUEST(cx);
+    return js_NewDateObjectMsec(cx, msec);
+}
+
+JS_PUBLIC_API(JSBool)
+JS_ObjectIsDate(JSContext *cx, JSObject *obj)
+{
+    JS_ASSERT(obj);
+    return obj->isDate();
+}
+
+/************************************************************************/
+
 /*
  * Regular Expressions.
  */
diff --git a/js/src/jsapi.h b/js/src/jsapi.h
index e07eb4268bec..3667560abb82 100644
--- a/js/src/jsapi.h
+++ b/js/src/jsapi.h
@@ -3596,6 +3596,24 @@ JS_SetErrorReporter(JSContext *cx, JSErrorReporter er);
 
 /************************************************************************/
 
+/*
+ * Dates.
+ */
+
+extern JS_PUBLIC_API(JSObject *)
+JS_NewDateObject(JSContext *cx, int y, int m, int d, int h, int m, int s);
+
+extern JS_PUBLIC_API(JSObject *)
+JS_NewDateObjectMsec(JSContext *cx, jsdouble msec);
+
+/*
+ * Infallible predicate to test whether obj is a date object.
+ */
+extern JS_PUBLIC_API(JSBool)
+JS_ObjectIsDate(JSContext *cx, JSObject *obj);
+
+/************************************************************************/
+
 /*
  * Regular Expressions.
  */