diff --git a/loko/assets/management/commands/import_fulcrum_trees.py b/loko/assets/management/commands/import_fulcrum_trees.py
index e69a3c0..295eae0 100644
--- a/loko/assets/management/commands/import_fulcrum_trees.py
+++ b/loko/assets/management/commands/import_fulcrum_trees.py
@@ -972,8 +972,73 @@ class Command(BaseCommand):
             InterventionAsset.objects.bulk_create(chunk, batch_size=BATCH_SIZE)
             self.log(f"  Insertion liens : {min(i + BATCH_SIZE, len(assets_to_create))} / {len(assets_to_create)}")
 
+        # Synchronisation des événements de planification timeline
+        self.sync_intervention_planning_events()
+
         self.log(f"Importation des interventions terminée. Total en base : {Intervention.objects.count()}")
 
+    def sync_intervention_planning_events(self):
+        """
+        Crée ou met à jour les événements de la timeline de planification (InterventionPlanificationTimeLine) :
+        - 'expected_end' : échéance prévisionnelle calculée depuis in_deadline
+        - 'expected_begin' : date de début / diagnostic initial depuis dia_date
+        """
+        self.log("--- Synchronisation des événements de planification (timeline) ---")
+        from django.db import connection
+
+        with connection.cursor() as cur:
+            # 1. Échéances prévisionnelles (expected_end)
+            cur.execute("""
+                INSERT INTO interventions_interventionplanificationtimeline (
+                    intervention_id, event_time, event_type, event_description
+                )
+                SELECT i.id, i.expected_end_time, 'expected_end', 'Échéance prévisionnelle'
+                FROM interventions_intervention i
+                WHERE i.expected_end_time IS NOT NULL
+                  AND NOT EXISTS (
+                      SELECT 1 FROM interventions_interventionplanificationtimeline p
+                      WHERE p.intervention_id = i.id AND p.event_type = 'expected_end'
+                  );
+            """)
+            created_end = cur.rowcount
+
+            cur.execute("""
+                UPDATE interventions_interventionplanificationtimeline p
+                SET event_time = i.expected_end_time
+                FROM interventions_intervention i
+                WHERE p.intervention_id = i.id
+                  AND p.event_type = 'expected_end'
+                  AND p.event_time != i.expected_end_time;
+            """)
+            updated_end = cur.rowcount
+            self.log(f"  Échéance prévisionnelle (expected_end) : {created_end} créés, {updated_end} mis à jour")
+
+            # 2. Diagnostics initiaux (expected_begin)
+            cur.execute("""
+                INSERT INTO interventions_interventionplanificationtimeline (
+                    intervention_id, event_time, event_type, event_description
+                )
+                SELECT i.id, i.expected_begin_time, 'expected_begin', 'Diagnostic initial'
+                FROM interventions_intervention i
+                WHERE i.expected_begin_time IS NOT NULL
+                  AND NOT EXISTS (
+                      SELECT 1 FROM interventions_interventionplanificationtimeline p
+                      WHERE p.intervention_id = i.id AND p.event_type = 'expected_begin'
+                  );
+            """)
+            created_begin = cur.rowcount
+
+            cur.execute("""
+                UPDATE interventions_interventionplanificationtimeline p
+                SET event_time = i.expected_begin_time
+                FROM interventions_intervention i
+                WHERE p.intervention_id = i.id
+                  AND p.event_type = 'expected_begin'
+                  AND p.event_time != i.expected_begin_time;
+            """)
+            updated_begin = cur.rowcount
+            self.log(f"  Diagnostic initial (expected_begin) : {created_begin} créés, {updated_begin} mis à jour")
+
     def sync_tree_maintenance_dates(self, gestion_file=None):
         """
         Synchronise les dates et périodicités de maintenance sur les arbres :
@@ -981,10 +1046,13 @@ class Command(BaseCommand):
         - pruning_frequency_years : périodicité extraite du délai/titre (ex: Dans 1 an -> 1)
         - last_phytosanitary_date : max(expected_begin_time) des interventions de diagnostic
         - last_pruning_date : date d'exécution de la dernière taille (depuis gestion.csv ou interventions passées)
+        - timeline de planification : synchronisation des événements expected_begin / expected_end
         """
         self.log("--- Synchronisation des dates de maintenance sur les arbres ---")
         from django.db import connection
 
+        self.sync_intervention_planning_events()
+
         content_type_tree = ContentType.objects.get_for_model(NatureTree)
 
         with connection.cursor() as cur:
diff --git a/loko/assets/templates/assets/components/asset_interventions.html b/loko/assets/templates/assets/components/asset_interventions.html
index be90c92..1c40ae9 100644
--- a/loko/assets/templates/assets/components/asset_interventions.html
+++ b/loko/assets/templates/assets/components/asset_interventions.html
@@ -85,7 +85,9 @@
                                     {% endif %}
                                 </td>
                                 <td class="pe-3">
-                                    <small class="text-muted">{{ intervention.creation_time|date:"d/m/Y" }}</small>
+                                    <small class="text-muted" title="{% if intervention.end_time %}{% translate 'Date de réalisation' %}{% elif intervention.expected_end_time %}{% translate 'Échéance prévisionnelle' %}{% elif intervention.expected_begin_time %}{% translate 'Date de début prévisionnelle' %}{% else %}{% translate 'Date de création' %}{% endif %}">
+                                        {{ intervention.end_time|default:intervention.expected_end_time|default:intervention.expected_begin_time|default:intervention.creation_time|date:"d/m/Y" }}
+                                    </small>
                                 </td>
                             </tr>
                         {% endfor %}
diff --git a/loko/assets/tests_import_fulcrum.py b/loko/assets/tests_import_fulcrum.py
index 9bb8603..3ad21ab 100644
--- a/loko/assets/tests_import_fulcrum.py
+++ b/loko/assets/tests_import_fulcrum.py
@@ -158,6 +158,15 @@ class ImportFulcrumTreesCommandTest(TestCase):
             self.assertEqual(tree.next_inspection_date, date(2025, 5, 10))
             self.assertEqual(tree.pruning_frequency_years, 1)
 
+            # Vérifications événements de planification (timeline)
+            self.assertEqual(itv.planned_events.count(), 2)
+            begin_event = itv.planned_events.filter(event_type='expected_begin').first()
+            self.assertIsNotNone(begin_event)
+            self.assertEqual(begin_event.event_time.date(), date(2024, 5, 10))
+            end_event = itv.planned_events.filter(event_type='expected_end').first()
+            self.assertIsNotNone(end_event)
+            self.assertEqual(end_event.event_time.date(), date(2025, 5, 10))
+
             # Vérification liaison InterventionAsset
             links = InterventionAsset.objects.filter(intervention=itv)
             self.assertEqual(links.count(), 1)