diff --git a/app/views/admin/procedures/_list.html.haml b/app/views/admin/procedures/_list.html.haml
index 39f9a4a4a..833a6a6fc 100644
--- a/app/views/admin/procedures/_list.html.haml
+++ b/app/views/admin/procedures/_list.html.haml
@@ -20,9 +20,9 @@
         - if procedure.publiee?
           %td.procedure-lien= link_to(procedure_lien(procedure), procedure_lien(procedure))
         - if procedure.publiee_ou_archivee?
-          %td= link_to(procedure.published_at.present? ? procedure.published_at.strftime('%d/%m/%Y %H:%M') : "", admin_procedure_href)
+          %td= link_to(procedure.published_at.present? ? try_format_datetime(procedure.published_at) : "", admin_procedure_href)
         - else
-          %td= link_to(procedure.created_at.strftime('%d/%m/%Y %H:%M'), admin_procedure_href)
+          %td= link_to(try_format_datetime(procedure.created_at), admin_procedure_href)
         %td
           = link_to('Cloner', admin_procedure_clone_path(procedure.id), data: { method: :put }, class: 'btn-sm btn-primary clone-btn')
           - if !procedure.publiee_ou_archivee?
diff --git a/app/views/administrateur_mailer/activate_before_expiration.haml b/app/views/administrateur_mailer/activate_before_expiration.haml
index 6f60a52cc..a5e0bea12 100644
--- a/app/views/administrateur_mailer/activate_before_expiration.haml
+++ b/app/views/administrateur_mailer/activate_before_expiration.haml
@@ -5,7 +5,7 @@
 
 %p
   Vous avez fait la demande d’un compte administrateur sur demarches-simplifiees.fr.
-  Votre compte a été créé mais reste inactif, il arrivera à expiration le #{@expiration_date.strftime("%d/%m/%Y")}
+  Votre compte a été créé mais reste inactif, il arrivera à expiration le #{try_format_date(@expiration_date)}
 
 %p
   Afin d’activer votre compte, veuillez cliquer sur le lien ci-dessous :
diff --git a/app/views/new_administrateur/procedure_administrateurs/_administrateur.html.haml b/app/views/new_administrateur/procedure_administrateurs/_administrateur.html.haml
index 65354f432..9277ae0ad 100644
--- a/app/views/new_administrateur/procedure_administrateurs/_administrateur.html.haml
+++ b/app/views/new_administrateur/procedure_administrateurs/_administrateur.html.haml
@@ -1,6 +1,6 @@
 %tr{ id: "procedure-#{@procedure.id}-administrateur-#{administrateur.id}" }
   %td= administrateur.email
-  %td= administrateur.created_at.strftime('%d/%m/%Y %H:%M')
+  %td= try_format_datetime(administrateur.created_at)
   %td= administrateur.registration_state
   %td
     - if administrateur == current_administrateur
diff --git a/app/views/shared/dossiers/_champ_row.html.haml b/app/views/shared/dossiers/_champ_row.html.haml
index e59716d6b..66d5b4807 100644
--- a/app/views/shared/dossiers/_champ_row.html.haml
+++ b/app/views/shared/dossiers/_champ_row.html.haml
@@ -41,4 +41,4 @@
         %td.updated-at
           %span{ class: highlight_if_unseen_class(demande_seen_at, c.updated_at) }
             modifié le
-            = c.updated_at.strftime("%d/%m/%Y à %H:%M")
+            = try_format_datetime(c.updated_at)
diff --git a/app/views/shared/dossiers/_identite_individual.html.haml b/app/views/shared/dossiers/_identite_individual.html.haml
index c1d08eb5d..7f83da051 100644
--- a/app/views/shared/dossiers/_identite_individual.html.haml
+++ b/app/views/shared/dossiers/_identite_individual.html.haml
@@ -12,4 +12,4 @@
     - if individual.birthdate.present?
       %tr
         %th.libelle Date de naissance :
-        %td= individual.birthdate&.strftime("%d/%m/%Y")
+        %td= try_format_date(individual.birthdate)
diff --git a/app/views/shared/dossiers/_pieces_jointes.html.haml b/app/views/shared/dossiers/_pieces_jointes.html.haml
index f547c6f72..c11777fb4 100644
--- a/app/views/shared/dossiers/_pieces_jointes.html.haml
+++ b/app/views/shared/dossiers/_pieces_jointes.html.haml
@@ -23,11 +23,11 @@
                         = link_to pj.content_url, { target: :blank, rel: :noopener } do
                           %span.filename= display_pj_filename(pj)
                           %span
-                            ajoutée le #{pj.created_at.strftime('%d/%m/%Y à %H:%M')}
+                            ajoutée le #{try_format_datetime(pj.created_at)}
         - else
           %td Pièce non fournie
         %td.updated-at
           - if pj
             %span{ class: highlight_if_unseen_class(demande_seen_at, pj.updated_at) }
               modifié le
-              = pj.updated_at.strftime("%d/%m/%Y à %H:%M")
+              = try_format_datetime(pj.updated_at)
diff --git a/app/views/shared/dossiers/_submit_is_over.html.haml b/app/views/shared/dossiers/_submit_is_over.html.haml
index 9d81a8a96..212f6e00f 100644
--- a/app/views/shared/dossiers/_submit_is_over.html.haml
+++ b/app/views/shared/dossiers/_submit_is_over.html.haml
@@ -3,6 +3,6 @@
     .card-title
       Le dépôt de dossier est fermé
     - if dossier.procedure.archived_at.present?
-      Il n'est plus possible de déposer de dossier pour cette démarche en ligne depuis le #{dossier.procedure.archived_at.strftime("%d/%m/%Y")}.
+      Il n'est plus possible de déposer de dossier pour cette démarche en ligne depuis le #{try_format_date(dossier.procedure.archived_at)}.
     - else
       Il n'est plus possible de déposer de dossier pour cette démarche en ligne.
diff --git a/app/views/shared/dossiers/editable_champs/_champ_label.html.haml b/app/views/shared/dossiers/editable_champs/_champ_label.html.haml
index 43c6d2b11..1800c94bb 100644
--- a/app/views/shared/dossiers/editable_champs/_champ_label.html.haml
+++ b/app/views/shared/dossiers/editable_champs/_champ_label.html.haml
@@ -5,7 +5,7 @@
 
   - if champ.updated_at.present? && seen_at.present?
     %span.updated-at{ class: highlight_if_unseen_class(seen_at, champ.updated_at) }
-      = "modifié le #{champ.updated_at.strftime('%d/%m/%Y à %H:%M')}"
+      = "modifié le #{try_format_datetime(champ.updated_at)}"
 
   - if champ.description.present?
     %span.notice= string_to_html(champ.description)
diff --git a/app/views/users/dossiers/index.html.haml b/app/views/users/dossiers/index.html.haml
index 8d49cd044..9475432c3 100644
--- a/app/views/users/dossiers/index.html.haml
+++ b/app/views/users/dossiers/index.html.haml
@@ -47,7 +47,7 @@
                   = render partial: 'shared/dossiers/status_badge', locals: { dossier: dossier }
               %td.updated-at-col
                 = link_to(url_for_dossier(dossier), class: 'cell-link') do
-                  = dossier.updated_at.strftime("%d/%m/%Y")
+                  = try_format_date(dossier.updated_at)
               %td.action-col.action-col
                 = render partial: 'dossier_actions', locals: { dossier: dossier }
     = paginate(@dossiers)
diff --git a/spec/views/shared/dossiers/_demande.html.haml_spec.rb b/spec/views/shared/dossiers/_demande.html.haml_spec.rb
index 4c1a7d796..c1d28dd72 100644
--- a/spec/views/shared/dossiers/_demande.html.haml_spec.rb
+++ b/spec/views/shared/dossiers/_demande.html.haml_spec.rb
@@ -38,7 +38,7 @@ describe 'shared/dossiers/demande.html.haml', type: :view do
       expect(rendered).to include(individual.gender)
       expect(rendered).to include(individual.nom)
       expect(rendered).to include(individual.prenom)
-      expect(rendered).to include(individual.birthdate.strftime("%d/%m/%Y"))
+      expect(rendered).to include(I18n.l(individual.birthdate))
     end
   end