diff --git a/app/scodoc/sco_evaluation_edit.py b/app/scodoc/sco_evaluation_edit.py
index c24be275..ed63817c 100644
--- a/app/scodoc/sco_evaluation_edit.py
+++ b/app/scodoc/sco_evaluation_edit.py
@@ -45,6 +45,7 @@ from app.scodoc.sco_utils import ModuleType
 from app.scodoc.sco_exceptions import ScoValueError
 from app.scodoc.TrivialFormulator import TrivialFormulator
 from app.scodoc import html_sco_header
+from app.scodoc import sco_cache
 from app.scodoc import sco_evaluations
 from app.scodoc import sco_moduleimpl
 from app.scodoc import sco_preferences
@@ -87,7 +88,7 @@ def evaluation_create_form(
         {html_sco_header.sco_header()}
         <h2>Opération non autorisée</h2>
         <p>Modification évaluation impossible pour {current_user.get_nomplogin()}</p>
-        <p><a href="{url_for('notes.moduleimpl_status', 
+        <p><a href="{url_for('notes.moduleimpl_status',
             scodoc_dept=g.scodoc_dept, moduleimpl_id=moduleimpl_id)
             }" class="stdlink">Revenir</a>
         </p>
@@ -131,7 +132,7 @@ def evaluation_create_form(
     H = [
         f"""<h3>{action} en
         {scu.MODULE_TYPE_NAMES[mod["module_type"]]} <a class="stdlink" href="{
-            url_for("notes.moduleimpl_status", 
+            url_for("notes.moduleimpl_status",
                 scodoc_dept=g.scodoc_dept, moduleimpl_id=moduleimpl_id)
             }">{mod["code"] or "module sans code"} {mod["titre"]}</a> {link}</h3>
         """
@@ -299,7 +300,7 @@ def evaluation_create_form(
                         "type": "float",
                         "explanation": f"""
                             <span class="eval_coef_ue" title="coef. du module dans cette UE">({
-                                "coef. mod.:" +str(coef_ue) if coef_ue 
+                                "coef. mod.:" +str(coef_ue) if coef_ue
                                 else "ce module n'a pas de coef. dans cette UE"
                             })</span>
                             <span class="eval_coef_ue_titre">{ue.titre}</span>
@@ -382,4 +383,5 @@ def evaluation_create_form(
                 evaluation.set_ue_poids(ue, tf[2][f"poids_{ue.id}"])
         db.session.add(evaluation)
         db.session.commit()
+        sco_cache.invalidate_formsemestre(evaluation.moduleimpl.formsemestre.id)
         return flask.redirect(dest_url)
diff --git a/app/static/css/edt.css b/app/static/css/edt.css
index b0990d8f..135be653 100644
--- a/app/static/css/edt.css
+++ b/app/static/css/edt.css
@@ -23,5 +23,12 @@
     height: calc(100% - 44px) !important;
 }
 .toastui-calendar-week-view-day-names, .toastui-calendar-time {
-  overflow: hidden !important;
+    overflow: hidden !important;
+}
+
+.ic-arrow-line-left {
+    background: url('../icons/ic-arrow-line-left.png') no-repeat;
+}
+.ic-arrow-line-right {
+    background: url('../icons/ic-arrow-line-right.png') no-repeat;
 }
diff --git a/app/templates/formsemestre/edt.j2 b/app/templates/formsemestre/edt.j2
index d5bb1deb..d8c92eb4 100644
--- a/app/templates/formsemestre/edt.j2
+++ b/app/templates/formsemestre/edt.j2
@@ -13,6 +13,19 @@
 <div class="tab-content">
     <h2>Expérimental: emploi du temps</h2>
 
+    <div>
+        <span id="menu-navi">
+            <button type="button" class="btn btn-default btn-sm move-today"
+                data-action="move-today">Aujourd'hui</button>
+            <button type="button" class="btn btn-default btn-sm move-day" data-action="move-prev">
+                <i class="calendar-icon ic-arrow-line-left" data-action="move-prev"></i>
+            </button>
+            <button type="button" class="btn btn-default btn-sm move-day" data-action="move-next">
+                <i class="calendar-icon ic-arrow-line-right" data-action="move-next"></i>
+            </button>
+        </span>
+        <span id="renderRange" class="render-range"></span>
+    </div>
     <div id="calendar" style="height: calc(100vh - 180px);"></div>
 
 </div>