diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.1.ddl.aql
new file mode 100644
index 0000000..0e39a04
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.1.ddl.aql
@@ -0,0 +1,8 @@
+/*
+ * Description      :   Check comparison and order-by for day-time-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
+drop dataverse test if exists;
+create dataverse test;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.2.update.aql
new file mode 100644
index 0000000..335a24a
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.2.update.aql
@@ -0,0 +1,5 @@
+/*
+ * Description      :   Check comparison and order-by for day-time-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.3.query.aql
new file mode 100644
index 0000000..69a8b28
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/day_time_duration_order/day_time_duration_order.3.query.aql
@@ -0,0 +1,15 @@
+/*
+ * Description      :   Check comparison and order-by for day-time-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
+use dataverse test;
+
+let $dr1 := day-time-duration("P439D")
+let $dr2 := day-time-duration("-PT328M")
+let $dr3 := day-time-duration("-P48DT12M43.932S")
+let $dr4 := day-time-duration("P12H")
+
+for $dr in [$dr1, $dr2, $dr3, $dr4]
+order by $dr
+return $dr
diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.1.ddl.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.1.ddl.aql
new file mode 100644
index 0000000..356810c
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.1.ddl.aql
@@ -0,0 +1,8 @@
+/*
+ * Description      :   Check comparison and order-by for year-month-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
+drop dataverse test if exists;
+create dataverse test;
+
diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.2.update.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.2.update.aql
new file mode 100644
index 0000000..65105d6
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.2.update.aql
@@ -0,0 +1,5 @@
+/*
+ * Description      :   Check comparison and order-by for year-month-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.3.query.aql b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.3.query.aql
new file mode 100644
index 0000000..3fbfafe
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/queries/comparison/year_month_duration_order/year_month_duration_order.3.query.aql
@@ -0,0 +1,15 @@
+/*
+ * Description      :   Check comparison and order-by for year-month-duration
+ * Expected Result  :   Success
+ * Date             :   May 18, 2013
+ */
+use dataverse test;
+
+let $dr1 := year-month-duration("P439Y")
+let $dr2 := year-month-duration("-P328M")
+let $dr3 := year-month-duration("-P48Y12M")
+let $dr4 := year-month-duration("P12M")
+
+for $dr in [$dr1, $dr2, $dr3, $dr4]
+order by $dr
+return $dr
diff --git a/asterix-app/src/test/resources/runtimets/results/comparison/day_time_duration_order/day_time_duration_order.1.adm b/asterix-app/src/test/resources/runtimets/results/comparison/day_time_duration_order/day_time_duration_order.1.adm
new file mode 100644
index 0000000..4c0aea9
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/comparison/day_time_duration_order/day_time_duration_order.1.adm
@@ -0,0 +1,4 @@
+day-time-duration("-P48DT12M43.932S")
+day-time-duration("-PT5H28M")
+day-time-duration("P12H")
+day-time-duration("P439D")
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/results/comparison/year_month_duration_order/year_month_duration_order.1.adm b/asterix-app/src/test/resources/runtimets/results/comparison/year_month_duration_order/year_month_duration_order.1.adm
new file mode 100644
index 0000000..c0159ce
--- /dev/null
+++ b/asterix-app/src/test/resources/runtimets/results/comparison/year_month_duration_order/year_month_duration_order.1.adm
@@ -0,0 +1,4 @@
+year-month-duration("-P49Y")
+year-month-duration("-P27Y4M")
+year-month-duration("P1Y")
+year-month-duration("P439Y")
\ No newline at end of file
diff --git a/asterix-app/src/test/resources/runtimets/testsuite.xml b/asterix-app/src/test/resources/runtimets/testsuite.xml
index 07a8f4a..5b6d787 100644
--- a/asterix-app/src/test/resources/runtimets/testsuite.xml
+++ b/asterix-app/src/test/resources/runtimets/testsuite.xml
@@ -391,6 +391,11 @@
   </test-group>
   <test-group name="comparison">
     <test-case FilePath="comparison">
+      <compilation-unit name="year_month_duration_order">
+        <output-dir compare="Text">year_month_duration_order</output-dir>
+      </compilation-unit>
+    </test-case>
+    <test-case FilePath="comparison">
       <compilation-unit name="datetime_order">
         <output-dir compare="Text">datetime_order</output-dir>
       </compilation-unit>
diff --git a/asterix-aql/pom.xml b/asterix-aql/pom.xml
index 038ec62..249299c 100644
--- a/asterix-aql/pom.xml
+++ b/asterix-aql/pom.xml
@@ -41,6 +41,24 @@
 					</execution>
 				</executions>
 			</plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>add-source</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>add-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>${project.build.directory}/generated-sources/javacc/</source>
+                            </sources>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
 		</plugins>
 		<pluginManagement>
 			<plugins>
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADayTimeDurationPrinterFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADayTimeDurationPrinterFactory.java
new file mode 100644
index 0000000..4817916
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/ADayTimeDurationPrinterFactory.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers;
+
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+
+public class ADayTimeDurationPrinterFactory implements IPrinterFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static final ADayTimeDurationPrinterFactory INSTANCE = new ADayTimeDurationPrinterFactory();
+
+    @Override
+    public IPrinter createPrinter() {
+        return ADayTimeDurationPrinter.INSTANCE;
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AObjectPrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AObjectPrinter.java
index 478ad2c..41fd904 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AObjectPrinter.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AObjectPrinter.java
@@ -73,6 +73,14 @@
                 ADurationPrinter.INSTANCE.print(b, s, l, ps);
                 break;
             }
+            case YEARMONTHDURATION: {
+                AYearMonthDurationPrinter.INSTANCE.print(b, s, l, ps);
+                break;
+            }
+            case DAYTIMEDURATION: {
+                ADayTimeDurationPrinter.INSTANCE.print(b, s, l, ps);
+                break;
+            }
             case INTERVAL: {
                 AIntervalPrinter.INSTANCE.print(b, s, l, ps);
                 break;
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AYearMonthDurationPrinterFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AYearMonthDurationPrinterFactory.java
new file mode 100644
index 0000000..7e6111d
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/AYearMonthDurationPrinterFactory.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers;
+
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+
+public class AYearMonthDurationPrinterFactory implements IPrinterFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static final AYearMonthDurationPrinterFactory INSTANCE = new AYearMonthDurationPrinterFactory();
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinterFactory#createPrinter()
+     */
+    @Override
+    public IPrinter createPrinter() {
+        return AYearMonthDurationPrinter.INSTANCE;
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinter.java
new file mode 100644
index 0000000..552e8d7
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinter.java
@@ -0,0 +1,28 @@
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import java.io.PrintStream;
+
+import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+
+public class ADayTimeDurationPrinter implements IPrinter {
+
+    public static final ADayTimeDurationPrinter INSTANCE = new ADayTimeDurationPrinter();
+
+    @Override
+    public void init() throws AlgebricksException {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void print(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
+        long milliseconds = AInt64SerializerDeserializer.getLong(b, s + 1);
+
+        ps.print("{ day-time-duration: ");
+        ps.print(milliseconds);
+        ps.print("}");
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinterFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinterFactory.java
new file mode 100644
index 0000000..bbf0a70
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/ADayTimeDurationPrinterFactory.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+
+public class ADayTimeDurationPrinterFactory implements IPrinterFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static final ADayTimeDurationPrinterFactory INSTANCE = new ADayTimeDurationPrinterFactory();
+
+    @Override
+    public IPrinter createPrinter() {
+        return ADayTimeDurationPrinter.INSTANCE;
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinter.java
new file mode 100644
index 0000000..c6afb74
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinter.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2009-2011 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import java.io.PrintStream;
+
+import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt8SerializerDeserializer;
+import edu.uci.ics.asterix.om.types.ATypeTag;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+
+public class AIntervalPrinter implements IPrinter {
+
+    public static final AIntervalPrinter INSTANCE = new AIntervalPrinter();
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinter#init()
+     */
+    @Override
+    public void init() throws AlgebricksException {
+    }
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinter#print(byte[], int, int, java.io.PrintStream)
+     */
+    @Override
+    public void print(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
+        ps.print("{ interval: { start: ");
+
+        short typetag = AInt8SerializerDeserializer.getByte(b, s + 1 + 8 * 2);
+
+        IPrinter timeInstancePrinter;
+
+        if (typetag == ATypeTag.DATE.serialize()) {
+            timeInstancePrinter = ADatePrinter.INSTANCE;
+            ((ADatePrinter) timeInstancePrinter).print(b, s + 4, 4, ps);
+            ps.print(", end: ");
+            ((ADatePrinter) timeInstancePrinter).print(b, s + 12, 4, ps);
+        } else if (typetag == ATypeTag.TIME.serialize()) {
+            timeInstancePrinter = ATimePrinter.INSTANCE;
+            ((ATimePrinter) timeInstancePrinter).print(b, s + 4, 4, ps);
+            ps.print(", end: ");
+            ((ATimePrinter) timeInstancePrinter).print(b, s + 12, 4, ps);
+        } else if (typetag == ATypeTag.DATETIME.serialize()) {
+            timeInstancePrinter = ADateTimePrinter.INSTANCE;
+            ((ADateTimePrinter) timeInstancePrinter).print(b, s, 8, ps);
+            ps.print(", end: ");
+            ((ADateTimePrinter) timeInstancePrinter).print(b, s + 8, 8, ps);
+        } else {
+            throw new AlgebricksException("Unsupport internal time types in interval: " + typetag);
+        }
+
+        ps.print("}}");
+    }
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinterFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinterFactory.java
new file mode 100644
index 0000000..7b3c3fe
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AIntervalPrinterFactory.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2009-2011 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+
+public class AIntervalPrinterFactory implements IPrinterFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static final AIntervalPrinterFactory INSTANCE = new AIntervalPrinterFactory();
+
+    @Override
+    public IPrinter createPrinter() {
+        return AIntervalPrinter.INSTANCE;
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AObjectPrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AObjectPrinter.java
index 29c4ee1..3cf4ff2 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AObjectPrinter.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AObjectPrinter.java
@@ -73,6 +73,14 @@
                 ADurationPrinter.INSTANCE.print(b, s, l, ps);
                 break;
             }
+            case YEARMONTHDURATION: {
+                AYearMonthDurationPrinter.INSTANCE.print(b, s, l, ps);
+                break;
+            }
+            case DAYTIMEDURATION: {
+                ADayTimeDurationPrinter.INSTANCE.print(b, s, l, ps);
+                break;
+            }
             case POINT: {
                 APointPrinter.INSTANCE.print(b, s, l, ps);
                 break;
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinter.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinter.java
new file mode 100644
index 0000000..163dc52
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinter.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import java.io.PrintStream;
+
+import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer;
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+
+public class AYearMonthDurationPrinter implements IPrinter {
+
+    public static final AYearMonthDurationPrinter INSTANCE = new AYearMonthDurationPrinter();
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinter#init()
+     */
+    @Override
+    public void init() throws AlgebricksException {
+    }
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinter#print(byte[], int, int, java.io.PrintStream)
+     */
+    @Override
+    public void print(byte[] b, int s, int l, PrintStream ps) throws AlgebricksException {
+
+        int months = AInt32SerializerDeserializer.getInt(b, s + 1);
+
+        ps.print("{ year-month-duration: ");
+        ps.print(months);
+        ps.print("}");
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinterFactory.java b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinterFactory.java
new file mode 100644
index 0000000..b32d010
--- /dev/null
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/dataflow/data/nontagged/printers/json/AYearMonthDurationPrinterFactory.java
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2009-2013 by The Regents of the University of California
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * you may obtain a copy of the License from
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package edu.uci.ics.asterix.dataflow.data.nontagged.printers.json;
+
+import edu.uci.ics.hyracks.algebricks.data.IPrinter;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+
+public class AYearMonthDurationPrinterFactory implements IPrinterFactory {
+
+    private static final long serialVersionUID = 1L;
+    public static final AYearMonthDurationPrinterFactory INSTANCE = new AYearMonthDurationPrinterFactory();
+
+    /* (non-Javadoc)
+     * @see edu.uci.ics.hyracks.algebricks.data.IPrinterFactory#createPrinter()
+     */
+    @Override
+    public IPrinter createPrinter() {
+        return AYearMonthDurationPrinter.INSTANCE;
+    }
+
+}
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlJSONPrinterFactoryProvider.java b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlJSONPrinterFactoryProvider.java
index b8c6ab0..842a6e8 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlJSONPrinterFactoryProvider.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/formats/nontagged/AqlJSONPrinterFactoryProvider.java
@@ -14,11 +14,11 @@
  */
 package edu.uci.ics.asterix.formats.nontagged;
 
-
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ABooleanPrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ACirclePrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADatePrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADateTimePrinterFactory;
+import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADayTimeDurationPrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADoublePrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADurationPrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AFloatPrinterFactory;
@@ -40,6 +40,8 @@
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ATimePrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AUnionPrinterFactory;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AUnorderedlistPrinterFactory;
+import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AYearMonthDurationPrinter;
+import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AYearMonthDurationPrinterFactory;
 import edu.uci.ics.asterix.om.types.AOrderedListType;
 import edu.uci.ics.asterix.om.types.ARecordType;
 import edu.uci.ics.asterix.om.types.AUnionType;
@@ -63,8 +65,8 @@
 
         if (aqlType != null) {
             switch (aqlType.getTypeTag()) {
-                // case ANYTYPE:
-                // return AAnyTypePrinterFactory.INSTANCE;
+            // case ANYTYPE:
+            // return AAnyTypePrinterFactory.INSTANCE;
                 case INT8:
                     return AInt8PrinterFactory.INSTANCE;
                 case INT16:
@@ -89,6 +91,10 @@
                     return ADateTimePrinterFactory.INSTANCE;
                 case DURATION:
                     return ADurationPrinterFactory.INSTANCE;
+                case YEARMONTHDURATION:
+                    return AYearMonthDurationPrinterFactory.INSTANCE;
+                case DAYTIMEDURATION:
+                    return ADayTimeDurationPrinterFactory.INSTANCE;
                 case POINT:
                     return APointPrinterFactory.INSTANCE;
                 case POINT3D:
diff --git a/asterix-om/src/main/java/edu/uci/ics/asterix/om/pointables/printer/json/APrintVisitor.java b/asterix-om/src/main/java/edu/uci/ics/asterix/om/pointables/printer/json/APrintVisitor.java
index b2d5339..e88ed7e 100644
--- a/asterix-om/src/main/java/edu/uci/ics/asterix/om/pointables/printer/json/APrintVisitor.java
+++ b/asterix-om/src/main/java/edu/uci/ics/asterix/om/pointables/printer/json/APrintVisitor.java
@@ -24,6 +24,7 @@
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ACirclePrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADatePrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADateTimePrinter;
+import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADayTimeDurationPrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADoublePrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ADurationPrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AFloatPrinter;
@@ -39,6 +40,7 @@
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ARectanglePrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AStringPrinter;
 import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.ATimePrinter;
+import edu.uci.ics.asterix.dataflow.data.nontagged.printers.json.AYearMonthDurationPrinter;
 import edu.uci.ics.asterix.om.pointables.AFlatValuePointable;
 import edu.uci.ics.asterix.om.pointables.AListPointable;
 import edu.uci.ics.asterix.om.pointables.ARecordPointable;
@@ -173,6 +175,14 @@
                     AStringPrinter.INSTANCE.print(b, s, l, ps);
                     break;
                 }
+                case YEARMONTHDURATION: {
+                    AYearMonthDurationPrinter.INSTANCE.print(b, s, l, ps);
+                    break;
+                }
+                case DAYTIMEDURATION: {
+                    ADayTimeDurationPrinter.INSTANCE.print(b, s, l, ps);
+                    break;
+                }
                 default: {
                     throw new NotImplementedException("No printer for type " + typeTag);
                 }