diff --git a/app/templates/assiduites/pages/signal_assiduites_diff.j2 b/app/templates/assiduites/pages/signal_assiduites_diff.j2
index ea11796e6..700b84f7f 100644
--- a/app/templates/assiduites/pages/signal_assiduites_diff.j2
+++ b/app/templates/assiduites/pages/signal_assiduites_diff.j2
@@ -20,6 +20,14 @@
 <script>
     const etudsDefDem = {{ defdem  | safe }}
 
+    const timeMorning = "{{ timeMorning | safe}}";
+    const timeNoon = "{{ timeNoon | safe}}";
+    const timeEvening = "{{ timeEvening | safe}}";
+
+    const defaultDates = {{ defaultDates | safe }}
+    const nonWorkDays = [{{ nonworkdays| safe }}];
+
+
     window.addEventListener('load', () => {
         [...document.querySelectorAll('.tr[etudid]')].forEach((a) => {
             try {
@@ -28,8 +36,33 @@
                     a.classList.add(defdem);
                 }
             } catch (_) { }
-        })
+        });
+
+        if (defaultDates != null) {
+            defaultDates.forEach((dateString) => {
+
+                d = moment(dateString).weekday();
+
+                if (verifyNonWorkDays(d, nonWorkDays)) return;
+
+                matin = `${dateString}T${timeMorning}`;
+                midi = `${dateString}T${timeNoon}`;
+                soir = `${dateString}T${timeEvening}`;
+
+                console.log(matin, midi, soir)
+
+                createColumn(matin, midi);
+                createColumn(midi, soir);
+            });
+
+            updateAllCol();
+        } else {
+            createColumn();
+        }
     })
+
+
+
 </script>
 
 
diff --git a/app/templates/assiduites/pages/signal_assiduites_etud.j2 b/app/templates/assiduites/pages/signal_assiduites_etud.j2
index 44a37f247..2222cbe42 100644
--- a/app/templates/assiduites/pages/signal_assiduites_etud.j2
+++ b/app/templates/assiduites/pages/signal_assiduites_etud.j2
@@ -118,6 +118,8 @@
         window.forceModule = "{{ forcer_module }}"
         window.forceModule = window.forceModule == "True" ? true : false
 
+        createColumn();
+
     </script>
 
 
diff --git a/app/templates/assiduites/widgets/differee.j2 b/app/templates/assiduites/widgets/differee.j2
index 0b267b8c1..aa42a3e5a 100644
--- a/app/templates/assiduites/widgets/differee.j2
+++ b/app/templates/assiduites/widgets/differee.j2
@@ -9,9 +9,8 @@
 
         {% for etud in etudiants %}
         <div class="tr" etudid="{{etud.etudid}}">
-            <div class="td sticky">
+            <div class="td sticky etudinfo" id="row-{{etud.etudid}}">
                 <span>{{etud.nomprenom}}</span>
-                <img class="pdp-hover" src="" alt="No Img" etudid="{{etud.etudid}}">
             </div>
         </div>
         {% endfor %}
@@ -40,6 +39,10 @@
         gap: 15px;
     }
 
+    .tr[etudid] {
+        height: 50px;
+    }
+
     .table-container {
         overflow: auto;
         position: relative;
@@ -72,13 +75,13 @@
 
     .th,
     .td {
-        padding: 20px;
         text-align: center;
         width: 225px;
         border: 1px solid #ddd;
         display: flex;
         justify-content: center;
         align-content: center;
+        min-height: 40px;
     }
 
     .tr {
@@ -88,11 +91,17 @@
         width: max-content;
     }
 
+    .td span {
+        align-items: center;
+        display: flex;
+    }
+
     .sticky {
         position: sticky;
         left: 0;
         background-color: #fafafa;
         border-right: 1px solid #ddd;
+        z-index: 100;
     }
 
     .mini-form {
@@ -120,7 +129,7 @@
         border-radius: 50%;
         right: -60px;
         top: calc(50% - 50px /2);
-        background-color: #007BFF;
+        background-color: #09c;
         color: white;
         border: none;
         outline: none;
@@ -133,13 +142,13 @@
     }
 
     .th {
-        background-color: #007BFF;
+        background-color: #09c;
         color: white;
         position: relative;
     }
 
     .th.error {
-        background-color: crimson;
+        background-color: #d71111;
     }
 
     .tbody .tr:nth-child(even) {
@@ -219,7 +228,7 @@
     .th.error:hover .col-error {
         display: block;
         z-index: 2000;
-        background-color: crimson;
+        background-color: #d71111;
         width: 100%;
         min-height: 25%;
         bottom: -25%;
@@ -269,7 +278,7 @@
         currentDate = moment(currentDate).tz(TIMEZONE).format("YYYY-MM-DDTHH:mm");
     }
 
-    function createColumn() {
+    function createColumn(dateStart = "", dateEnd = "") {
         let table = document.getElementById("studentTable");
         let th = document.createElement("div");
         th.classList.add("th", "error");
@@ -282,8 +291,8 @@
           <div class="btngroup" style="justify-content: flex-end;">
                 <button class="closeCol" onclick="removeColumn(this)">x</button>
           </div>
-          <input type="datetime-local" id="dateStart">
-          <input type="datetime-local" id="dateEnd">
+          <input type="datetime-local" id="dateStart" value="${dateStart}">
+          <input type="datetime-local" id="dateEnd" value="${dateEnd}">
           {{moduleimpl_select|safe}}
           <div id="mass_action_${col_id}" class="mass">
           <input disabled="" type="radio" class="rbtn present" name="mass_action_${col_id}" value="present" onclick="massCol(this)">
@@ -300,8 +309,10 @@
 
 
 
-        const last = [...document.querySelectorAll("#dateStart")].pop();
-        defaultDate(last);
+        if (dateStart == "") {
+            const last = [...document.querySelectorAll("#dateStart")].pop();
+            defaultDate(last);
+        }
 
         try {
             const sl = th.querySelector('.dynaSelect');
@@ -614,7 +625,7 @@
     function updateAllCol() {
         const colIds = [...document.querySelectorAll("[col]")].map((col) => { return col.getAttribute('col') });
         colIds.forEach((colid) => {
-            updateAssiduitesCol(colid);
+            getAndUpdateCol(colid)
         })
     }
 
@@ -1009,7 +1020,6 @@
             createColumn();
         });
 
-        createColumn();
         setEtuds();
 
         document.querySelectorAll('.pdp-hover').forEach((el) => {
diff --git a/app/views/assiduites.py b/app/views/assiduites.py
index 488a7842a..cd267a954 100644
--- a/app/views/assiduites.py
+++ b/app/views/assiduites.py
@@ -210,6 +210,7 @@ def signal_assiduites_etud():
             "js/assiduites.js",
             "libjs/moment.new.min.js",
             "libjs/moment-timezone.js",
+            "js/etud_info.js",
         ],
         cssstyles=[
             "css/assiduites.css",
@@ -880,6 +881,21 @@ def signal_assiduites_diff():
     group_ids: list[int] = request.args.get("group_ids", None)
     formsemestre_id: int = request.args.get("formsemestre_id", -1)
     date: str = request.args.get("jour", datetime.date.today().isoformat())
+
+    date_deb: str = request.args.get("date_deb")
+    date_fin: str = request.args.get("date_fin")
+
+    semaine: str = request.args.get("semaine")
+
+    if semaine is not None:
+        semaine = (
+            f"{scu.annee_scolaire()}-W{semaine}" if "W" not in semaine else semaine
+        )
+        date_deb: datetime.date = datetime.datetime.strptime(
+            semaine + "-1", "%Y-W%W-%w"
+        )
+        date_fin: datetime.date = date_deb + datetime.timedelta(days=6)
+
     etudiants: list[dict] = []
 
     titre = None
@@ -936,6 +952,7 @@ def signal_assiduites_diff():
             "js/assiduites.js",
             "libjs/moment.new.min.js",
             "libjs/moment-timezone.js",
+            "js/etud_info.js",
         ],
     )
 
@@ -968,11 +985,35 @@ def signal_assiduites_diff():
             gr=gr_tit,
             sem=sem["titre_num"],
             defdem=_get_etuds_dem_def(formsemestre),
+            timeMorning=ScoDocSiteConfig.get("assi_morning_time", "08:00:00"),
+            timeNoon=ScoDocSiteConfig.get("assi_lunch_time", "13:00:00"),
+            timeEvening=ScoDocSiteConfig.get("assi_evening_time", "18:00:00"),
+            defaultDates=_get_days_between_dates(date_deb, date_fin),
+            nonworkdays=_non_work_days(),
         ),
         html_sco_header.sco_footer(),
     ).build()
 
 
+def _get_days_between_dates(deb: str, fin: str):
+    if deb is None or fin is None:
+        return "null"
+    try:
+        if isinstance(deb, str) and isinstance(fin, str):
+            date_deb: datetime.date = datetime.date.fromisoformat(deb)
+            date_fin: datetime.date = datetime.date.fromisoformat(fin)
+        else:
+            date_deb, date_fin = deb.date(), fin.date()
+    except ValueError:
+        return "null"
+    dates: list[str] = []
+    while date_deb <= date_fin:
+        dates.append(f'"{date_deb.isoformat()}"')
+        date_deb = date_deb + datetime.timedelta(days=1)
+
+    return f"[{','.join(dates)}]"
+
+
 def _differee(
     etudiants, moduleimpl_select, date=None, periode=None, formsemestre_id=None
 ):