--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/core/TimeNodes.java	Tue Jan 07 18:53:04 2014 +0100
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
+ * code is released under a tri EPL/GPL/LGPL license. You can use it,
+ * redistribute it and/or modify it under the terms of the:
+ *
+ * Eclipse Public License version 1.0
+ * GNU General Public License version 2
+ * GNU Lesser General Public License version 2.1
+ */
+package com.oracle.truffle.ruby.nodes.core;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.ruby.runtime.*;
+import com.oracle.truffle.ruby.runtime.core.*;
+
+@CoreClass(name = "Time")
+public abstract class TimeNodes {
+
+    @CoreMethod(names = "-", minArgs = 1, maxArgs = 1)
+    public abstract static class SubNode extends CoreMethodNode {
+
+        public SubNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public SubNode(SubNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public double sub(RubyTime a, RubyTime b) {
+            return a.subtract(b);
+        }
+
+    }
+
+    @CoreMethod(names = "now", isModuleMethod = true, needsSelf = false, maxArgs = 0)
+    public abstract static class NowNode extends CoreMethodNode {
+
+        public NowNode(RubyContext context, SourceSection sourceSection) {
+            super(context, sourceSection);
+        }
+
+        public NowNode(NowNode prev) {
+            super(prev);
+        }
+
+        @Specialization
+        public RubyTime now() {
+            return RubyTime.fromDate(getContext().getCoreLibrary().getTimeClass(), System.currentTimeMillis());
+        }
+
+    }
+
+}