diff --git a/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/BeforeTemporalInstant.java b/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/BeforeTemporalInstant.java
new file mode 100644
index 0000000..c9f31c3
--- /dev/null
+++ b/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/BeforeTemporalInstant.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 at
+ *
+ *   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 org.apache.rya.api.function.temporal;
+
+import java.time.ZonedDateTime;
+import java.util.Objects;
+
+import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
+import edu.umd.cs.findbugs.annotations.NonNull;
+
+/**
+ * Filter function in a SPARQL query used to filter when a point of time is before another.
+ */
+@DefaultAnnotation(NonNull.class)
+public class BeforeTemporalInstant extends TemporalRelationFunction {
+    public static final String URI = BASE_URI + "before";
+
+    @Override
+    public String getURI() {
+        return URI;
+    }
+
+    @Override
+    protected boolean relation(final ZonedDateTime d1, final ZonedDateTime d2) {
+        Objects.requireNonNull(d1);
+        Objects.requireNonNull(d2);
+        return d1.isBefore(d2);
+    }
+}
diff --git a/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/EqualsTemporal.java b/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/EqualsTemporal.java
index c8a6041..07391c8 100644
--- a/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/EqualsTemporal.java
+++ b/common/rya.api.function/src/main/java/org/apache/rya/api/function/temporal/EqualsTemporal.java
@@ -25,6 +25,9 @@
 import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
 import edu.umd.cs.findbugs.annotations.NonNull;
 
+import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
+import edu.umd.cs.findbugs.annotations.NonNull;
+
 /**
  * Filter function in a SPARQL query used to filter equality over time.
  */
diff --git a/common/rya.api.function/src/main/resources/META-INF/services/org.openrdf.query.algebra.evaluation.function.Function b/common/rya.api.function/src/main/resources/META-INF/services/org.openrdf.query.algebra.evaluation.function.Function
index 475b9dd..3cb1c56 100644
--- a/common/rya.api.function/src/main/resources/META-INF/services/org.openrdf.query.algebra.evaluation.function.Function
+++ b/common/rya.api.function/src/main/resources/META-INF/services/org.openrdf.query.algebra.evaluation.function.Function
@@ -1,3 +1,4 @@
+#
 # Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information
@@ -14,4 +15,6 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-org.apache.rya.api.function.temporal.EqualsTemporal
\ No newline at end of file
+#
+org.apache.rya.api.function.temporal.EqualsTemporal
+org.apache.rya.api.function.temporal.BeforeTemporalInstant
diff --git a/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java b/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/BeforeTemporalFunctionsTest.java
similarity index 80%
copy from common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java
copy to common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/BeforeTemporalFunctionsTest.java
index e0dabe1..1b15035 100644
--- a/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java
+++ b/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/BeforeTemporalFunctionsTest.java
@@ -27,7 +27,7 @@
 import org.openrdf.model.ValueFactory;
 import org.openrdf.model.impl.ValueFactoryImpl;
 
-public class TemporalFunctionsTest {
+public class BeforeTemporalFunctionsTest {
     private static final ZonedDateTime TIME = ZonedDateTime.parse("2015-12-30T12:00:00Z");
     private static final ZonedDateTime TIME_10 = ZonedDateTime.parse("2015-12-30T12:00:10Z");
     private static final ZonedDateTime TIME_20 = ZonedDateTime.parse("2015-12-30T12:00:20Z");
@@ -35,8 +35,8 @@
     final ValueFactory VF = ValueFactoryImpl.getInstance();
 
     @Test
-    public void testEquals_equal() throws Exception {
-        final EqualsTemporal function = new EqualsTemporal();
+    public void testBefore_same() throws Exception {
+        final BeforeTemporalInstant function = new BeforeTemporalInstant();
 
         // 2 times equal
         final Value[] args = new Value[2];
@@ -44,30 +44,30 @@
         args[1] = VF.createLiteral(TIME.toString());
         final Value rez = function.evaluate(VF, args);
 
-        assertEquals(VF.createLiteral(true), rez);
+        assertEquals(VF.createLiteral(false), rez);
     }
 
     @Test
-    public void testEquals_before() throws Exception {
-        final EqualsTemporal function = new EqualsTemporal();
+    public void testBefore_before() throws Exception {
+        final BeforeTemporalInstant function = new BeforeTemporalInstant();
 
-        // first time is before
+        // 2 times equal
         final Value[] args = new Value[2];
         args[0] = VF.createLiteral(TIME.toString());
         args[1] = VF.createLiteral(TIME_10.toString());
         final Value rez = function.evaluate(VF, args);
 
-        assertEquals(VF.createLiteral(false), rez);
+        assertEquals(VF.createLiteral(true), rez);
     }
 
     @Test
-    public void testEquals_after() throws Exception {
-        final EqualsTemporal function = new EqualsTemporal();
+    public void testBefore_after() throws Exception {
+        final BeforeTemporalInstant function = new BeforeTemporalInstant();
 
-        // first time is after
+        // 2 times equal
         final Value[] args = new Value[2];
         args[0] = VF.createLiteral(TIME_20.toString());
-        args[1] = VF.createLiteral(TIME_10.toString());
+        args[1] = VF.createLiteral(TIME.toString());
         final Value rez = function.evaluate(VF, args);
 
         assertEquals(VF.createLiteral(false), rez);
diff --git a/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java b/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/EqualsTemporalFunctionsTest.java
similarity index 98%
rename from common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java
rename to common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/EqualsTemporalFunctionsTest.java
index e0dabe1..f32904a 100644
--- a/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/TemporalFunctionsTest.java
+++ b/common/rya.api.function/src/main/test/org/apache/rya/api/function/temporal/EqualsTemporalFunctionsTest.java
@@ -27,7 +27,7 @@
 import org.openrdf.model.ValueFactory;
 import org.openrdf.model.impl.ValueFactoryImpl;
 
-public class TemporalFunctionsTest {
+public class EqualsTemporalFunctionsTest {
     private static final ZonedDateTime TIME = ZonedDateTime.parse("2015-12-30T12:00:00Z");
     private static final ZonedDateTime TIME_10 = ZonedDateTime.parse("2015-12-30T12:00:10Z");
     private static final ZonedDateTime TIME_20 = ZonedDateTime.parse("2015-12-30T12:00:20Z");
diff --git a/extras/rya.streams/kafka/src/test/java/org/apache/rya/streams/kafka/processors/filter/TemporalFilterIT.java b/extras/rya.streams/kafka/src/test/java/org/apache/rya/streams/kafka/processors/filter/TemporalFilterIT.java
index 2bc98ca..837b57b 100644
--- a/extras/rya.streams/kafka/src/test/java/org/apache/rya/streams/kafka/processors/filter/TemporalFilterIT.java
+++ b/extras/rya.streams/kafka/src/test/java/org/apache/rya/streams/kafka/processors/filter/TemporalFilterIT.java
@@ -57,8 +57,9 @@
 public class TemporalFilterIT {
     private static final ValueFactory vf = new ValueFactoryImpl();
     private static final String TEMPORAL = "http://rya.apache.org/ns/temporal";
-    private static final ZonedDateTime time1 = ZonedDateTime.parse("2015-12-30T12:00:00Z");
-    private static final ZonedDateTime time2 = ZonedDateTime.parse("2015-12-30T12:00:10Z");
+    private static final ZonedDateTime TIME = ZonedDateTime.parse("2015-12-30T12:00:00Z");
+    private static final ZonedDateTime TIME_10 = ZonedDateTime.parse("2015-12-30T12:00:10Z");
+    private static final ZonedDateTime TIME_20 = ZonedDateTime.parse("2015-12-30T12:00:20Z");
 
     @Rule
     public KafkaTestInstanceRule kafka = new KafkaTestInstanceRule(false);
@@ -73,12 +74,12 @@
             }
         }
 
-        // There are 1 temporal functions registered, ensure that there are 1.
-        assertEquals(1, count);
+        // There are 2 temporal functions registered, ensure that there are 2.
+        assertEquals(2, count);
     }
 
     @Test
-    public void showProcessorWorks() throws Exception {
+    public void showEqualsWorks() throws Exception {
         // Enumerate some topics that will be re-used
         final String ryaInstance = UUID.randomUUID().toString();
         final UUID queryId = UUID.randomUUID();
@@ -88,12 +89,12 @@
         // Get the RDF model objects that will be used to build the query.
         final String sparql =
                 "PREFIX time: <http://www.w3.org/2006/time/> \n"
-                        + "PREFIX tempf: <http://rya.apache.org/ns/temporal/>\n"
-                        + "SELECT * \n"
-                        + "WHERE { \n"
-                        + "  <urn:time> time:atTime ?date .\n"
-                        + " FILTER(tempf:equals(?date, \"" + time1.toString() + "\")) "
-                        + "}";
+            + "PREFIX tempf: <http://rya.apache.org/ns/temporal/>\n"
+            + "SELECT * \n"
+            + "WHERE { \n"
+            + "  <urn:time> time:atTime ?date .\n"
+            + " FILTER(tempf:equals(?date, \"" + TIME.toString() + "\")) "
+            + "}";
         // Setup a topology.
         final TopologyBuilder builder = new TopologyFactory().build(sparql, statementsTopic, resultsTopic, new RandomUUIDFactory());
 
@@ -104,7 +105,7 @@
         // Make the expected results.
         final Set<VisibilityBindingSet> expected = new HashSet<>();
         final MapBindingSet bs = new MapBindingSet();
-        bs.addBinding("date", vf.createLiteral(time1.toString()));
+        bs.addBinding("date", vf.createLiteral(TIME.toString()));
         expected.add( new VisibilityBindingSet(bs, "a") );
 
         // Run the test.
@@ -113,8 +114,9 @@
 
     private List<VisibilityStatement> getStatements() throws Exception {
         final List<VisibilityStatement> statements = new ArrayList<>();
-        statements.add(new VisibilityStatement(statement(time1), "a"));
-        statements.add(new VisibilityStatement(statement(time2), "a"));
+        statements.add(new VisibilityStatement(statement(TIME), "a"));
+        statements.add(new VisibilityStatement(statement(TIME_10), "a"));
+        statements.add(new VisibilityStatement(statement(TIME_20), "a"));
         return statements;
     }
 
@@ -124,4 +126,4 @@
         final Value object = vf.createLiteral(time.toString());
         return new StatementImpl(subject, predicate, object);
     }
-}
\ No newline at end of file
+}