diff --git a/test/tw-1634.t b/test/tw-1634.t
new file mode 100755
index 000000000..e412cb2ab
--- /dev/null
+++ b/test/tw-1634.t
@@ -0,0 +1,87 @@
+#!/usr/bin/env python2.7
+# -*- coding: utf-8 -*-
+################################################################################
+##
+## Copyright 2006 - 2015, Paul Beckingham, Federico Hernandez.
+##
+## Permission is hereby granted, free of charge, to any person obtaining a copy
+## of this software and associated documentation files (the "Software"), to deal
+## in the Software without restriction, including without limitation the rights
+## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+## copies of the Software, and to permit persons to whom the Software is
+## furnished to do so, subject to the following conditions:
+##
+## The above copyright notice and this permission notice shall be included
+## in all copies or substantial portions of the Software.
+##
+## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+## THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+## SOFTWARE.
+##
+## http://www.opensource.org/licenses/mit-license.php
+##
+################################################################################
+
+import sys
+import os
+import unittest
+
+# Ensure python finds the local simpletap module
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from basetest import Task, TestCase
+
+class Test1634(TestCase):
+    def setUp(self):
+        self.t = Task()
+
+        # Setup some tasks due on 2015-07-07
+        self.t(('add', 'due:2015-07-07T00:00:00', 'on due date 1'))
+        self.t(('add', 'due:2015-07-07T08:00:00', 'on due date 2'))
+        self.t(('add', 'due:2015-07-07T14:34:56', 'on due date 3'))
+        self.t(('add', 'due:2015-07-07T22:00:00', 'on due date 4'))
+        self.t(('add', 'due:2015-07-07T23:59:59', 'on due date 5'))
+
+        # Setup some tasks not due on 2015-07-07
+        self.t(('add', 'due:2015-07-06T23:59:59', 'not on due date 1'))
+        self.t(('add', 'due:2015-07-08T00:00:00', 'not on due date 2'))
+        self.t(('add', 'due:2015-07-08T00:00:01', 'not on due date 3'))
+        self.t(('add', 'due:2015-07-06T00:00:00', 'not on due date 4'))
+
+
+    def test_due_match_not_exact(self):
+        """Test that due:<date> matches any task that date."""
+
+        code, out, err = self.t(('due:2015-07-07', 'minimal'))
+
+        # Assert that each task on 2015-07-07 is listed
+        for i in range(1,5):
+            self.assertIn("on due date {0}".format(i), out)
+
+        # Assert that no task not on 2015-07-07 is not listed
+        for i in range(1,4):
+            self.assertNotIn("not on due date {0}".format(i), out)
+
+    def test_due_not_match_not_exact(self):
+        """Test that due.not:<date> does not match any task that date."""
+
+        code, out, err = self.t(('due.not:2015-07-07', 'minimal'))
+
+        # Assert that every task not on 2015-07-07 is listed
+        for i in range(1,4):
+            self.assertIn("not on due date {0}".format(i), out)
+
+        # Assert that each task on 2015-07-07 is listed
+        for i in range(1,5):
+            self.assertNotIn("on due date {0}".format(i), out)
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    unittest.main(testRunner=TAPTestRunner())
+
+# vim: ai sts=4 et sw=4