diff --git a/src/pyson.js b/src/pyson.js
index 1c8130e1b5..ed4a7c3393 100644
--- a/src/pyson.js
+++ b/src/pyson.js
@@ -784,7 +784,7 @@
 
     Sao.PYSON.DateTime.eval_ = function(value, context) {
         var date = Sao.DateTime(value.y, value.M && value.M - 1, value.d,
-                value.h, value.m, value.s, value.ms && value.ms / 1000);
+                value.h, value.m, value.s, value.ms && value.ms / 1000, true);
         if (value.dy) date.add(value.dy, 'y');
         if (value.dM) date.add(value.dM, 'M');
         if (value.dd) date.add(value.dd, 'd');
diff --git a/tests/sao.js b/tests/sao.js
index 1e3090b002..39f6c3989d 100644
--- a/tests/sao.js
+++ b/tests/sao.js
@@ -826,51 +826,51 @@
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 12, 10, 30, 20, 0).valueOf());
+                new Date(Date.UTC(2010, 0, 12, 10, 30, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0, -1));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2009, 0, 12, 10, 30, 20, 0).valueOf());
+                new Date(Date.UTC(2009, 0, 12, 10, 30, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0, 0, 12));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2011, 0, 12, 10, 30, 20, 0).valueOf());
+                new Date(Date.UTC(2011, 0, 12, 10, 30, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0, 0, 0, -7));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 5, 10, 30, 20, 0).valueOf());
+                new Date(Date.UTC(2010, 0, 5, 10, 30, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0,
                     0, 0, 0, 12));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 12, 22, 30, 20, 0).valueOf());
+                new Date(Date.UTC(2010, 0, 12, 22, 30, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20,
                     0, 0, 0, 0, 0, -30));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 12, 10, 0, 20, 0).valueOf());
+                new Date(Date.UTC(2010, 0, 12, 10, 0, 20, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20,
                     0, 0, 0, 0, 0, 0, 30));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 12, 10, 30, 50, 0).valueOf());
+                new Date(Date.UTC(2010, 0, 12, 10, 30, 50, 0)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20,
                     0, 0, 0, 0, 0, 0, 0, 2000));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 0, 12, 10, 30, 20, 2).valueOf());
+                new Date(Date.UTC(2010, 0, 12, 10, 30, 20, 2)).valueOf());
 
         eval_ = new Sao.PYSON.Encoder().encode(
                 new Sao.PYSON.DateTime(2010, 2, 22, 10, 30, 20, 2000));
         QUnit.strictEqual(new Sao.PYSON.Decoder().decode(eval_).valueOf(),
-                new Date(2010, 1, 22, 10, 30, 20, 2).valueOf());
+                new Date(Date.UTC(2010, 1, 22, 10, 30, 20, 2)).valueOf());
 
         QUnit.strictEqual(new Sao.PYSON.DateTime(2010, 1, 12, 10, 30, 20, 0,
                 -1, 12, -7, 2, 15, 30, 1).toString(),