diff --git a/core/src/main/java/uk/gov/gchq/magmacore/service/MagmaCoreService.java b/core/src/main/java/uk/gov/gchq/magmacore/service/MagmaCoreService.java
index 107ac972..80fa222a 100644
--- a/core/src/main/java/uk/gov/gchq/magmacore/service/MagmaCoreService.java
+++ b/core/src/main/java/uk/gov/gchq/magmacore/service/MagmaCoreService.java
@@ -285,6 +285,34 @@ public List<? extends Thing> findAssociated(final IRI item, final IRI kindOfAsso
 
     }
 
+    /**
+     * Find the items associated to an item by an association of a specified kind that are valid at a PointInTime.
+     *
+     * @param item              IRI
+     * @param kindOfAssociation IRI
+     * @param pointInTime {@link PointInTime}
+     * @return {@link List} of {@link Thing}
+     */
+    public List<? extends Thing> findAssociated(final IRI item, final IRI kindOfAssociation, final PointInTime pointInTime) {
+
+        final Set<Object> pointInTimeValues = pointInTime.value(HQDM.ENTITY_NAME);
+        if (pointInTimeValues == null || pointInTimeValues.isEmpty()) {
+            return List.of();
+        }
+
+        final Instant when = Instant.parse(pointInTimeValues.iterator().next().toString());
+
+        final QueryResultList queryResultList = database
+                .executeQuery(String.format(MagmaCoreServiceQueries.FIND_ASSOCIATED,
+                        kindOfAssociation, item, item,
+                        kindOfAssociation, item, item,
+                        kindOfAssociation, item, item));
+
+        final QueryResultList queryResults = filterByPointInTime(when, queryResultList);
+        return database.toTopObjects(queryResults);
+
+    }
+
     /**
      * A case-sensitive search for entities in a specified class with a sign containing the given text.
      *
diff --git a/core/src/main/java/uk/gov/gchq/magmacore/service/sparql/MagmaCoreServiceQueries.java b/core/src/main/java/uk/gov/gchq/magmacore/service/sparql/MagmaCoreServiceQueries.java
index 3a6f2342..8088e1b1 100644
--- a/core/src/main/java/uk/gov/gchq/magmacore/service/sparql/MagmaCoreServiceQueries.java
+++ b/core/src/main/java/uk/gov/gchq/magmacore/service/sparql/MagmaCoreServiceQueries.java
@@ -362,66 +362,92 @@ public class MagmaCoreServiceQueries {
             """;
 
     /**
-     * TODO: Comment.
+     * Find things associated to a given thing by an association of a given kind.
      */
     public static final String FIND_ASSOCIATED = """
             PREFIX hqdm: <http://www.semanticweb.org/hqdm#>
 
-            select ?s ?p ?o
+
+            select ?s ?p ?o ?start ?finish
             where
             {
                 {
-                    select distinct ?s ?p ?o
-                        WHERE {
-                            BIND(<%s> as ?kind_of_association)
-                            ?from hqdm:temporal_part_of <%s>;
-                                hqdm:participant_in ?association.
-                            ?association hqdm:member_of_kind ?kind_of_association.
-                            ?participant hqdm:participant_in ?association;
-                                hqdm:temporal_part_of ?s.
-                            ?s ?p ?o.
-                            FILTER(?s != <%s>)
-                        }
+                select distinct ?s ?p ?o ?start ?finish
+                WHERE {
+                    BIND(<%s> as ?kind_of_association)
+                    ?from hqdm:temporal_part_of <%s>;
+                        hqdm:participant_in ?association.
+                    ?association hqdm:member_of_kind ?kind_of_association.
+                    ?participant hqdm:participant_in ?association;
+                        hqdm:temporal_part_of ?s.
+                    ?s ?p ?o.
+                    FILTER(?s != <%s>)
+                    OPTIONAL {
+                        ?association hqdm:beginning ?begin.
+                        ?begin hqdm:data_EntityName ?start.
+                    }
+                    OPTIONAL {
+                        ?association hqdm:ending ?end.
+                        ?end hqdm:data_EntityName ?finish.
+                    }
                 }
-                UNION
-                {
-                    select distinct ?s ?p ?o
-                        WHERE {
-                            BIND(<%s> as ?kind_of_association)
-                            ?from hqdm:temporal_part_of <%s>;
-                                hqdm:participant_in ?association.
-                            ?association hqdm:member_of_kind ?kind_of_association.
-                            ?participant hqdm:participant_in ?association;
-                                hqdm:temporal_part_of ?s;
-                                hqdm:member_of_kind ?role.
-                            FILTER(?s != <%s>)
-                            ?role hqdm:data_EntityName ?o;
-                                ?p ?o.
-                        }
+            }
+            UNION
+            {
+                select distinct ?s ?p ?o ?start ?finish
+                WHERE {
+                    BIND(<%s> as ?kind_of_association)
+                    ?from hqdm:temporal_part_of <%s>;
+                        hqdm:participant_in ?association.
+                    ?association hqdm:member_of_kind ?kind_of_association.
+                    ?participant hqdm:participant_in ?association;
+                        hqdm:temporal_part_of ?s;
+                    hqdm:member_of_kind ?role.
+                    FILTER(?s != <%s>)
+                    OPTIONAL {
+                        ?association hqdm:beginning ?begin.
+                        ?begin hqdm:data_EntityName ?start.
+                    }
+                    OPTIONAL {
+                        ?association hqdm:ending ?end.
+                        ?end hqdm:data_EntityName ?finish.
+                    }
+                    ?role hqdm:data_EntityName ?o;
+                    ?p ?o.
                 }
-                UNION
-                {
-                    select distinct ?s ?p ?o
-                        WHERE {
-                            BIND(<%s> as ?kind_of_association)
-                            ?from hqdm:temporal_part_of <%s>;
-                                hqdm:participant_in ?association.
-                            ?association hqdm:member_of_kind ?kind_of_association.
-                            ?participant hqdm:participant_in ?association;
-                                hqdm:temporal_part_of ?s.
-                            FILTER(?s != <%s>)
-                            ?state_of_individual hqdm:temporal_part_of ?s.
-                            ?repBySign hqdm:represents ?state_of_individual.
-                            ?repBySign a hqdm:representation_by_sign.
-                            ?state_of_sign hqdm:participant_in ?repBySign;
-                                a hqdm:state_of_sign;
-                                hqdm:temporal_part_of ?sign.
-                            ?sign hqdm:value_ ?o;
-                                ?p ?o.
-                        }
+            }
+            UNION
+            {
+                select distinct ?s ?p ?o ?start ?finish
+                WHERE {
+                    BIND(<%s> as ?kind_of_association)
+                    ?from hqdm:temporal_part_of <%s>;
+                        hqdm:participant_in ?association.
+                    ?association hqdm:member_of_kind ?kind_of_association.
+                    ?participant hqdm:participant_in ?association;
+                        hqdm:temporal_part_of ?s.
+                    FILTER(?s != <%s>)
+                    ?state_of_individual hqdm:temporal_part_of ?s.
+                    ?repBySign hqdm:represents ?state_of_individual.
+                    ?repBySign a hqdm:representation_by_sign.
+                    ?state_of_sign hqdm:participant_in ?repBySign;
+                        a hqdm:state_of_sign;
+                    hqdm:temporal_part_of ?sign.
+                    OPTIONAL {
+                        ?association hqdm:beginning ?begin.
+                        ?begin hqdm:data_EntityName ?start.
+                    }
+                    OPTIONAL {
+                        ?association hqdm:ending ?end.
+                        ?end hqdm:data_EntityName ?finish.
+                    }
+                    ?sign hqdm:value_ ?o;
+                        ?p ?o.
                 }
             }
-            order by ?s ?p ?o
+        }
+        order by ?s ?p ?o
+
             """;
 
     /**