diff --git a/runtime/ejs-date.c b/runtime/ejs-date.c
index 46c04f5b..1684f6e2 100644
--- a/runtime/ejs-date.c
+++ b/runtime/ejs-date.c
@@ -25,6 +25,23 @@ _ejs_date_unix_now ()
     return OBJECT_TO_EJSVAL(rv);
 }
 
+ejsval
+ejs_date_new (long tstamp) {
+    EJSDate* rv = _ejs_gc_new (EJSDate);
+
+    _ejs_init_object ((EJSObject*)rv, _ejs_Date_prototype, &_ejs_Date_specops);
+
+    /* recover timezone first */
+    gettimeofday (&rv->tv, &rv->tz);
+
+    /* convert and assign milliseconds afterwards */
+    rv->tv.tv_sec = tstamp / 1000;
+    rv->tv.tv_usec = (tstamp % 1000) * 1000;
+    rv->valid = EJS_TRUE;
+
+    return OBJECT_TO_EJSVAL(rv);
+}
+
 double
 _ejs_date_get_time (EJSDate *date)
 {
diff --git a/runtime/ejs-date.h b/runtime/ejs-date.h
index a0f11bd9..793cf6fa 100644
--- a/runtime/ejs-date.h
+++ b/runtime/ejs-date.h
@@ -19,9 +19,10 @@ typedef struct {
     struct timezone tz;
 } EJSDate;
 
-
 EJS_BEGIN_DECLS
 
+ejsval ejs_date_new (long tstamp);
+
 extern ejsval _ejs_Date;
 extern ejsval _ejs_Date_prototype;
 extern EJSSpecOps _ejs_Date_specops;
diff --git a/runtime/ejs-jsobjc.h b/runtime/ejs-jsobjc.h
index 9df831f4..2c728c91 100644
--- a/runtime/ejs-jsobjc.h
+++ b/runtime/ejs-jsobjc.h
@@ -69,6 +69,8 @@
 +(CKValue*)nsStringValue:(NSString*)str;
 +(CKValue*)utf8StringValue:(const char*)str;
 
++(CKValue*)nsDateValue:(NSDate*)date;
+
 +(CKValue*)valueWithJSValue:(ejsval)val;
 
 -(ejsval)jsValue;
@@ -148,9 +150,11 @@
 -(BOOL)isFunction;
 -(BOOL)isConstructor;
 -(BOOL)isArray;
+-(BOOL)isDate;
 
 -(jsuint)arrayLength;
 -(uint16_t)functionArity;;
+-(jslong)dateTimestamp;
 
 -(CKObject*)prototype;
 
diff --git a/runtime/ejs-jsobjc.m b/runtime/ejs-jsobjc.m
index 5456bec9..42ff01e3 100644
--- a/runtime/ejs-jsobjc.m
+++ b/runtime/ejs-jsobjc.m
@@ -7,6 +7,7 @@
 #include "ejs-objc.h"
 #include "ejs-object.h"
 #include "ejs-array.h"
+#include "ejs-date.h"
 #include "ejs-string.h"
 
 #define SPEW(x)
@@ -243,6 +244,13 @@ +(id)utf8StringValue:(const char*)str
 	return [[[CKValue alloc] initWithJSValue:STRING_TO_EJSVAL([[CKString stringWithUTF8CString:str] jsString])] autorelease];
 }
 
++(id)nsDateValue:(NSDate*)date
+{
+    ejsval jsDate = ejs_date_new (floor(date.timeIntervalSince1970 * 1000.0));
+    return [[[CKValue alloc] initWithJSValue:jsDate] autorelease];
+}
+
+
 +(id)valueWithJSValue:(ejsval)val
 {
 	return [[[CKValue alloc] initWithJSValue:val] autorelease];
@@ -486,6 +494,11 @@ -(BOOL)isArray
     return _obj->ops == &_ejs_Array_specops || _obj->ops == &_ejs_sparsearray_specops;
 }
 
+-(BOOL)isDate
+{
+    return _obj->ops == &_ejs_Date_specops;
+}
+
 -(jsuint)arrayLength
 {
     return ((EJSArray*)_obj)->array_length;
@@ -499,6 +512,12 @@ -(uint16_t)functionArity
 #endif
 }
 
+-(jslong)dateTimestamp
+{
+    EJSDate *date = (EJSDate*)_obj;
+    return (date->tv.tv_sec * 1000) + (date->tv.tv_usec / 1000);
+}
+
 -(CKObject*)prototype
 {
     ejsval p = _ejs_object_getprop (OBJECT_TO_EJSVAL(_obj), _ejs_atom_prototype);
diff --git a/runtime/ejs-objc.m b/runtime/ejs-objc.m
index 4a4fc66d..4c1ce8a4 100644
--- a/runtime/ejs-objc.m
+++ b/runtime/ejs-objc.m
@@ -440,6 +440,10 @@ -(NSString*) description
         return [CKValue nsStringValue:(NSString*)objc_id];
     }
 
+    if ([objc_id isKindOfClass:[NSDate class]]) {
+        return [CKValue nsDateValue:(NSDate*)objc_id];
+    }
+
     CKObject* ctor_obj = NULL;
     Class return_class = object_getClass (objc_id);
 
@@ -523,6 +527,13 @@ -(NSString*) description
         return [NSArray arrayWithArray:nsarray];
 }
 
+static NSDate*
+marshal_jsdate_as_nsdate (CKObject *o)
+{
+    NSTimeInterval tstamp = [o dateTimestamp] / 1000.0;
+    return [NSDate dateWithTimeIntervalSince1970:tstamp];
+}
+
 static ejsval
 invokeSelectorFromJS (ejsval env, ejsval _this, uint32_t argc, ejsval* args)
 {
@@ -619,7 +630,10 @@ -(NSString*) description
                         // let's assume we marshal this as an NSArray for now... XXX
                         arg_ptr = marshal_jsarray_as_nsarray (o);
                     }
+                    if ([o isDate])
+                        arg_ptr = marshal_jsdate_as_nsdate (o);
                 }
+
 				SPEW(NSLog (@"arg %d: object marshalling of %@", i, arg_ptr);)
             }
             else {
diff --git a/runtime/ejs-types.h b/runtime/ejs-types.h
index b1d9bec4..f8f67792 100644
--- a/runtime/ejs-types.h
+++ b/runtime/ejs-types.h
@@ -23,6 +23,7 @@ typedef unsigned long long uint64_t;
 
 typedef int32_t jsint;
 typedef uint32_t jsuint;
+typedef long jslong;
 typedef double jsdouble;
 
 typedef uint16_t jschar;