diff --git a/app/models/groups.py b/app/models/groups.py
index 8e8791ca0..72a54acf6 100644
--- a/app/models/groups.py
+++ b/app/models/groups.py
@@ -247,9 +247,9 @@ class GroupDescr(db.Model):
             d["partition"] = self.partition.to_dict(with_groups=False)
         return d
 
-    def get_edt_id(self) -> str:
-        "l'id pour l'emploi du temps: à défaut, le nom scodoc du groupe"
-        return self.edt_id or self.group_name or ""
+    def get_edt_ids(self) -> list[str]:
+        "les ids pour l'emploi du temps: à défaut, le nom scodoc du groupe"
+        return scu.split_id(self.edt_id) or [self.group_name] or []
 
     def get_nb_inscrits(self) -> int:
         """Nombre inscrits à ce group et au formsemestre.
diff --git a/app/scodoc/html_sco_header.py b/app/scodoc/html_sco_header.py
index 7b8466977..1b9e45194 100644
--- a/app/scodoc/html_sco_header.py
+++ b/app/scodoc/html_sco_header.py
@@ -213,6 +213,7 @@ def sco_header(
  window.onload=function(){{enableTooltips("gtrcontent")}};
 
  const SCO_URL="{scu.ScoURL()}";
+ const SCO_TIMEZONE="{scu.TIME_ZONE}";
 </script>"""
     )
 
diff --git a/app/scodoc/sco_archives_justificatifs.py b/app/scodoc/sco_archives_justificatifs.py
index 125569d01..60c3bd8db 100644
--- a/app/scodoc/sco_archives_justificatifs.py
+++ b/app/scodoc/sco_archives_justificatifs.py
@@ -157,10 +157,15 @@ class JustificatifArchiver(BaseArchiver):
         Si trace == True : sauvegarde le nom du/des fichier(s) supprimé(s)
             dans la trace de l'étudiant
         """
+        print("debug : ", archive_name, filename, has_trace)
         if str(etud.id) not in self.list_oids(etud.dept_id):
             raise ValueError(f"Aucune archive pour etudid[{etud.id}]")
-
-        archive_id = self.get_id_from_name(etud.id, archive_name, dept_id=etud.dept_id)
+        try:
+            archive_id = self.get_id_from_name(
+                etud.id, archive_name, dept_id=etud.dept_id
+            )
+        except ScoValueError:
+            raise ValueError(f"Archive Inconnue [{archive_name}]")
 
         if filename is not None:
             if filename not in self.list_archive(archive_id, dept_id=etud.dept_id):
diff --git a/app/scodoc/sco_edt_cal.py b/app/scodoc/sco_edt_cal.py
index 7aebfce7f..eaa172a0f 100644
--- a/app/scodoc/sco_edt_cal.py
+++ b/app/scodoc/sco_edt_cal.py
@@ -55,6 +55,7 @@ def formsemestre_load_calendar(
     """Load ics data, return raw ics and decoded calendar.
     Raises ScoValueError if not configured or not available or invalid format.
     """
+    edt_ids = []
     if edt_id is None and formsemestre:
         edt_ids = formsemestre.get_edt_ids()
     if not edt_ids:
@@ -408,6 +409,7 @@ def formsemestre_retreive_groups_from_edt_id(
     """Construit un dict donnant le groupe de chaque edt_id"""
     edt2group = {}
     for partition in formsemestre.partitions:
-        edt2group.update({g.get_edt_id(): g for g in partition.groups})
-    edt2group.pop("", None)
+        for g in partition.groups:
+            for edt_id in g.get_edt_ids():
+                edt2group[edt_id] = g
     return edt2group
diff --git a/app/scodoc/sco_groups_edit.py b/app/scodoc/sco_groups_edit.py
index f30d2ab2c..6c6cfd422 100644
--- a/app/scodoc/sco_groups_edit.py
+++ b/app/scodoc/sco_groups_edit.py
@@ -101,7 +101,8 @@ def group_rename(group_id):
                     "allow_null": True,
                     "explanation": """optionnel : identifiant du groupe dans le logiciel
                         d'emploi du temps, pour le cas où les noms de groupes ne seraient pas
-                        les mêmes dans ScoDoc et dans l'emploi du temps.""",
+                        les mêmes dans ScoDoc et dans l'emploi du temps (si plusieurs ids,
+                        les séparer par des virgules).""",
                 },
             ),
         ),
diff --git a/app/static/js/assiduites.js b/app/static/js/assiduites.js
index fd4892b41..aadd04cae 100644
--- a/app/static/js/assiduites.js
+++ b/app/static/js/assiduites.js
@@ -305,8 +305,8 @@ function executeMassActionQueue() {
      */
     const tlTimes = getTimeLineTimes();
     let assiduite = {
-      date_debut: tlTimes.deb.toIsoUtcString(),
-      date_fin: tlTimes.fin.toIsoUtcString(),
+      date_debut: tlTimes.deb.toFakeIso(),
+      date_fin: tlTimes.fin.toFakeIso(),
     };
 
     assiduite = setModuleImplId(assiduite);
@@ -601,7 +601,10 @@ function toTime(time) {
  * @returns
  */
 function formatDate(date, styles = { dateStyle: "full" }) {
-  return new Intl.DateTimeFormat("fr-FR", styles).format(date);
+  return new Intl.DateTimeFormat("fr-FR", {
+    ...{ timeZone: SCO_TIMEZONE },
+    ...styles,
+  }).format(date);
 }
 
 /**
@@ -610,19 +613,25 @@ function formatDate(date, styles = { dateStyle: "full" }) {
 function updateDate() {
   const dateInput = document.querySelector("#tl_date");
   let date = $(dateInput).datepicker("getDate");
-
   if (date == null) {
     date = new Date(Date.fromFRA(dateInput.value));
   }
-
+  const intlOptions = {
+    dateStyle: "full",
+    timeZone: SCO_TIMEZONE,
+  };
   let dateStr = "";
-  if (!isNonWorkDay(date.getDay(), nonWorkDays)) {
-    dateStr = formatDate(date).capitalize();
+
+  if (!isNonWorkDay(date, nonWorkDays)) {
+    dateStr = formatDate(date, intlOptions).capitalize();
   } else {
     // On se rend au dernier jour travaillé disponible
     const lastWorkDay = getNearestWorkDay(date);
     const att = document.createTextNode(
-      `Le jour sélectionné (${formatDate(date)}) n'est pas un jour travaillé.`
+      `Le jour sélectionné (${formatDate(
+        date,
+        intlOptions
+      )}) n'est pas un jour travaillé.`
     );
     const div = document.createElement("div");
     div.appendChild(att);
@@ -630,22 +639,23 @@ function updateDate() {
     div.appendChild(
       document.createTextNode(
         `Le dernier jour travaillé disponible a été sélectionné : ${formatDate(
-          lastWorkDay
+          lastWorkDay,
+          intlOptions
         )}.`
       )
     );
     openAlertModal("Attention", div, "", "#eec660");
-    const date_fra = Date.toFRA(lastWorkDay.toIsoUtcString().split("T")[0]);
 
     $(dateInput).datepicker("setDate", date_fra);
     dateInput.value = date_fra;
     date = lastWorkDay;
 
-    dateStr = formatDate(lastWorkDay).capitalize();
+    dateStr = formatDate(lastWorkDay, {
+      dateStyle: "full",
+      timeZone: SCO_TIMEZONE,
+    }).capitalize();
   }
 
-  console.warn(dateStr, date, date.toIsoUtcString());
-
   document.querySelector("#datestr").textContent = dateStr;
   return true;
 }
@@ -654,7 +664,7 @@ function getNearestWorkDay(date) {
   const aDay = 86400000; // 24 * 3600 * 1000 | H * s * ms
   let day = date;
   let count = 0;
-  while (isNonWorkDay(day.getDay(), nonWorkDays) && count++ < 7) {
+  while (isNonWorkDay(day, nonWorkDays) && count++ < 7) {
     day = new Date(day - aDay);
   }
   return day;
@@ -712,31 +722,12 @@ function formatDateModal(str, separator = " ") {
  * Renvoie Vrai si le jour est non travaillé
  */
 function isNonWorkDay(day, nonWorkdays) {
-  let d = "";
-  switch (day) {
-    case 0:
-      d = "dim";
-      break;
-    case 1:
-      d = "lun";
-      break;
-    case 2:
-      d = "mar";
-      break;
-    case 3:
-      d = "mer";
-      break;
-    case 4:
-      d = "jeu";
-      break;
-    case 5:
-      d = "ven";
-      break;
-    case 6:
-      d = "sam";
-      break;
-  }
-
+  const d = Intl.DateTimeFormat("fr-FR", {
+    timeZone: SCO_TIMEZONE,
+    weekday: "short",
+  })
+    .format(day)
+    .replace(".", "");
   return nonWorkdays.indexOf(d) != -1;
 }
 
@@ -783,8 +774,8 @@ function getTimeLineTimes() {
 function isConflictSameAsPeriod(conflict, period = undefined) {
   const tlTimes = period == undefined ? getTimeLineTimes() : period;
   const clTimes = {
-    deb: new Date(conflict.date_debut),
-    fin: new Date(conflict.date_fin),
+    deb: new Date(Date.removeUTC(conflict.date_debut)),
+    fin: new Date(Date.removeUTC(conflict.date_fin)),
   };
   return tlTimes.deb.isSame(clTimes.deb) && tlTimes.fin.isSame(clTimes.fin);
 }
@@ -850,8 +841,8 @@ function numberTimeToDate(nb) {
 function getAssiduitesFromEtuds(clear, deb, fin) {
   const etudIds = Object.keys(etuds).join(",");
 
-  const date_debut = deb ? deb : getPrevDate().toIsoUtcString();
-  const date_fin = fin ? fin : getNextDate().toIsoUtcString();
+  const date_debut = deb ? deb : getPrevDate().toFakeIso();
+  const date_fin = fin ? fin : getNextDate().toFakeIso();
 
   if (clear) {
     assiduites = {};
@@ -894,8 +885,8 @@ function getAssiduitesFromEtuds(clear, deb, fin) {
 function createAssiduite(etat, etudid) {
   const tlTimes = getTimeLineTimes();
   let assiduite = {
-    date_debut: tlTimes.deb.toIsoUtcString(),
-    date_fin: tlTimes.fin.toIsoUtcString(),
+    date_debut: tlTimes.deb.toFakeIso(),
+    date_fin: tlTimes.fin.toFakeIso(),
     etat: etat,
   };
 
@@ -937,6 +928,19 @@ function createAssiduite(etat, etudid) {
 
           openAlertModal("Sélection du module", content);
         }
+        if (
+          data.errors["0"].message == "L'étudiant n'est pas inscrit au module"
+        ) {
+          const HTML = `
+          <p>Attention, l'étudiant n'est pas inscrit à ce module.</p>
+          <p>Si c'est une erreur, veuillez voir avec le ou les responsables de votre scodoc.</p>
+          `;
+
+          const content = document.createElement("div");
+          content.innerHTML = HTML;
+
+          openAlertModal("Sélection du module", content);
+        }
         with_errors = true;
       }
     },
@@ -1076,8 +1080,8 @@ function getAssiduitesConflict(etudid, periode) {
 
   return etudAssiduites.filter((assi) => {
     const interval = {
-      deb: new Date(assi.date_debut),
-      fin: new Date(assi.date_fin),
+      deb: new Date(Date.removeUTC(assi.date_debut)),
+      fin: new Date(Date.removeUTC(assi.date_fin)),
     };
     const test = hasTimeConflict(periode, interval);
     return test;
@@ -1101,15 +1105,15 @@ function getLastAssiduiteOfPrevDate(etudid) {
   const prevAssiduites = etudAssiduites
     .filter((assi) => {
       const interval = {
-        deb: new Date(assi.date_debut),
-        fin: new Date(assi.date_fin),
+        deb: new Date(Date.removeUTC(assi.date_debut)),
+        fin: new Date(Date.removeUTC(assi.date_fin)),
       };
 
       return hasTimeConflict(period, interval);
     })
     .sort((a, b) => {
-      const a_fin = new Date(a.date_fin);
-      const b_fin = new Date(b.date_fin);
+      const a_fin = new Date(Date.removeUTC(a.date_fin));
+      const b_fin = new Date(Date.removeUTC(b.date_fin));
       return b_fin < a_fin;
     });
 
@@ -1144,8 +1148,8 @@ function getAssiduiteValue(field) {
  * @param {String | Number} etudid identifiant de l'étudiant
  */
 function actualizeEtudAssiduite(etudid) {
-  const date_debut = getPrevDate().toIsoUtcString();
-  const date_fin = getNextDate().toIsoUtcString();
+  const date_debut = getPrevDate().toFakeIso();
+  const date_fin = getNextDate().toFakeIso();
 
   const url_api =
     getUrl() +
@@ -1391,8 +1395,8 @@ function insertEtudRow(etud, index, output = false) {
     assiduite.etatAssiduite = conflict[0].etat;
 
     assiduite.id = conflict[0].assiduite_id;
-    assiduite.date_debut = conflict[0].date_debut;
-    assiduite.date_fin = conflict[0].date_fin;
+    assiduite.date_debut = Date.removeUTC(conflict[0].date_debut);
+    assiduite.date_fin = Date.removeUTC(conflict[0].date_fin);
     if (isConflictSameAsPeriod(conflict[0])) {
       assiduite.type = "édition";
     } else {
@@ -1623,9 +1627,7 @@ function getJustificatifFromPeriod(date, etudid, update) {
       getUrl() +
       `/api/justificatifs/${etudid}/query?date_debut=${date.deb
         .add(1, "seconds")
-        .toIsoUtcString()}&date_fin=${date.fin
-        .add(-1, "seconds")
-        .toIsoUtcString()}`,
+        .toFakeIso()}&date_fin=${date.fin.add(-1, "seconds").toFakeIso()}`,
     success: (data) => {
       update(data);
     },
@@ -1657,8 +1659,8 @@ function fastJustify(assiduite) {
   }
 
   const period = {
-    deb: new Date(assiduite.date_debut),
-    fin: new Date(assiduite.date_fin),
+    deb: new Date(Date.removeUTC(assiduite.date_debut)),
+    fin: new Date(Date.removeUTC(assiduite.date_fin)),
   };
   const action = (justifs) => {
     //créer un nouveau justificatif
@@ -1671,8 +1673,8 @@ function fastJustify(assiduite) {
       //créer justificatif
 
       const justif = {
-        date_debut: new Date(assiduite.date_debut).toIsoUtcString(),
-        date_fin: new Date(assiduite.date_fin).toIsoUtcString(),
+        date_debut: new Date(Date.removeUTC(assiduite.date_debut)).toFakeIso(),
+        date_fin: new Date(Date.removeUTC(assiduite.date_fin)).toFakeIso(),
         raison: raison,
         etat: etat,
       };
diff --git a/app/static/js/date_utils.js b/app/static/js/date_utils.js
index ee9ed1503..05babeede 100644
--- a/app/static/js/date_utils.js
+++ b/app/static/js/date_utils.js
@@ -59,6 +59,11 @@ Date.intersect = function (period, interval) {
   return period.deb <= interval.fin && period.fin >= interval.deb;
 };
 
+Date.removeUTC = function (isoString) {
+  const reg = new RegExp(/[+-][\d:]+$/);
+  return isoString.replace(reg, "");
+};
+
 Object.defineProperty(Date.prototype, "isValid", {
   value: function () {
     return !Number.isNaN(this.getTime());
@@ -198,13 +203,29 @@ Object.defineProperty(Date.prototype, "toIsoUtcString", {
    * @returns date au format iso utc (yyyy-mm-ddThh:MM±oo:oo:oo)
    */
   value: function () {
+    // Formater la date et l'heure
     const date = this;
     var tzo = -date.getTimezoneOffset(),
       dif = tzo >= 0 ? "+" : "-",
       pad = function (num) {
         return (num < 10 ? "0" : "") + num;
       };
+    return (
+      this.toFakeIso() +
+      dif +
+      pad(Math.floor(Math.abs(tzo) / 60)) +
+      ":" +
+      pad(Math.abs(tzo) % 60)
+    );
+  },
+});
 
+Object.defineProperty(Date.prototype, "toFakeIso", {
+  value: function () {
+    const date = this;
+    pad = function (num) {
+      return (num < 10 ? "0" : "") + num;
+    };
     return (
       date.getFullYear() +
       "-" +
@@ -216,11 +237,7 @@ Object.defineProperty(Date.prototype, "toIsoUtcString", {
       ":" +
       pad(date.getMinutes()) +
       ":" +
-      pad(date.getSeconds()) +
-      dif +
-      pad(Math.floor(Math.abs(tzo) / 60)) +
-      ":" +
-      pad(Math.abs(tzo) % 60)
+      pad(date.getSeconds())
     );
   },
 });
@@ -246,6 +263,7 @@ Object.defineProperty(Date.prototype, "format", {
           hour: "2-digit",
           minute: "2-digit",
           hour12: false,
+          timeZone: SCO_TIMEZONE,
         });
       case "DD/MM/YYYY HH:mm":
         return this.toLocaleString("fr-FR", {
@@ -255,6 +273,7 @@ Object.defineProperty(Date.prototype, "format", {
           hour: "2-digit",
           minute: "2-digit",
           hour12: false,
+          timeZone: SCO_TIMEZONE,
         });
 
       case "YYYY-MM-DDTHH:mm":
@@ -264,7 +283,7 @@ Object.defineProperty(Date.prototype, "format", {
       case "YYYY-MM-DD":
         return iso.slice(0, iso.indexOf("T"));
       default:
-        return this.toIsoUtcString();
+        return this.toFakeIso();
     }
   },
 });
diff --git a/app/templates/assiduites/pages/ajout_justificatif.j2 b/app/templates/assiduites/pages/ajout_justificatif.j2
index 445379ca4..fac1b11ed 100644
--- a/app/templates/assiduites/pages/ajout_justificatif.j2
+++ b/app/templates/assiduites/pages/ajout_justificatif.j2
@@ -103,7 +103,7 @@
 
     [required]::after {
         content: "*";
-        color: crimson;
+        color: var(--color-error);
     }
 </style>
 <script>
@@ -137,8 +137,8 @@
         const raison = field.querySelector('#justi_raison').value;
 
         return {
-            date_debut: new Date(deb).toIsoUtcString(),
-            date_fin: new Date(fin).toIsoUtcString(),
+            date_debut: new Date(deb).toFakeIso(),
+            date_fin: new Date(fin).toFakeIso(),
             etat: etat,
             raison: raison,
         }
diff --git a/app/templates/assiduites/pages/bilan_dept.j2 b/app/templates/assiduites/pages/bilan_dept.j2
index 5da0ae640..c38154935 100644
--- a/app/templates/assiduites/pages/bilan_dept.j2
+++ b/app/templates/assiduites/pages/bilan_dept.j2
@@ -167,7 +167,7 @@
         margin: 5px 0;
         border-radius: 7px;
 
-        background-color: crimson;
+        background-color: var(--color-error);
 
     }
 
diff --git a/app/templates/assiduites/pages/bilan_etud.j2 b/app/templates/assiduites/pages/bilan_etud.j2
index 77712bb1e..eeb190ab8 100644
--- a/app/templates/assiduites/pages/bilan_etud.j2
+++ b/app/templates/assiduites/pages/bilan_etud.j2
@@ -101,7 +101,7 @@
             openAlertModal("Dates invalides", document.createTextNode('La date de début se situe après la date de fin.'));
             return;
         }
-        countAssiduites(date_debut.toIsoUtcString(), date_fin.toIsoUtcString())
+        countAssiduites(date_debut.toFakeIso(), date_fin.toFakeIso())
 
     }
 
@@ -366,7 +366,7 @@
         margin: 5px 0;
         border-radius: 7px;
 
-        background-color: crimson;
+        background-color: var(--color-error);
 
     }
 
diff --git a/app/templates/assiduites/pages/calendrier.j2 b/app/templates/assiduites/pages/calendrier.j2
index c3dcf3e22..0f9ef84bd 100644
--- a/app/templates/assiduites/pages/calendrier.j2
+++ b/app/templates/assiduites/pages/calendrier.j2
@@ -453,17 +453,17 @@
                 let dayOfWeek = momentDate.getDay();
                 dayOfWeek = days[dayOfWeek];
 
-                let isNonWorkDay = nonWorkdays.includes(dayOfWeek.toLowerCase());
+                let isNonWorkDayVar = nonWorkdays.includes(dayOfWeek.toLowerCase());
                 const day = document.createElement('div');
                 day.className = `day`;
-                if (isNonWorkDay) {
+                if (isNonWorkDayVar) {
                     color = "nonwork";
                 } else if (!options.mode_demi) {
                     day.className = `day ${est_just}`;
                 }
 
 
-                if (options.mode_demi && !isNonWorkDay) {
+                if (options.mode_demi && !isNonWorkDayVar) {
 
                     est_just = []
                     // affichage n° jour + matin + aprem
@@ -560,7 +560,7 @@
                         day.classList.add(color);
                     }
 
-                    if (isNonWorkDay) {
+                    if (isNonWorkDayVar) {
                         const span_jour = document.createElement("span")
                         span_jour.textContent = dayOfWeek[0] + dayOfMonth;
                         day.appendChild(span_jour);
@@ -570,7 +570,6 @@
 
 
                 }
-                console.warn(day.classList, day.classList.length)
 
 
                 if (!nonWorkdays.includes(dayOfWeek.toLowerCase()) && dayAssiduities.length > 0) {
diff --git a/app/templates/assiduites/pages/signal_assiduites_diff.j2 b/app/templates/assiduites/pages/signal_assiduites_diff.j2
index a41704e93..d5a39e6c6 100644
--- a/app/templates/assiduites/pages/signal_assiduites_diff.j2
+++ b/app/templates/assiduites/pages/signal_assiduites_diff.j2
@@ -41,7 +41,7 @@
         if (defaultDates != null) {
             defaultDates.forEach((dateString) => {
 
-                d = new Date(dateString).getDay();
+                d = new Date(dateString);
 
                 if (isNonWorkDay(d, nonWorkDays)) return;
 
@@ -70,4 +70,4 @@
 {% include "assiduites/widgets/alert.j2" %}
 {% include "assiduites/widgets/prompt.j2" %}
 {% include "assiduites/widgets/conflict.j2" %}
-{% include "assiduites/widgets/toast.j2" %}
+{% include "assiduites/widgets/toast.j2" %}
\ No newline at end of file
diff --git a/app/templates/assiduites/pages/signal_assiduites_etud.j2 b/app/templates/assiduites/pages/signal_assiduites_etud.j2
index 0fa0a383d..2284604a7 100644
--- a/app/templates/assiduites/pages/signal_assiduites_etud.j2
+++ b/app/templates/assiduites/pages/signal_assiduites_etud.j2
@@ -105,13 +105,13 @@
             updateJustifyBtn();
         });
 
-        updateDate();
-
-        getSingleEtud({{ sco.etud.id }});
-        actualizeEtud({{ sco.etud.id }});
-        updateSelect()
-
-        updateJustifyBtn();
+        window.addEventListener("DOMContentLoaded", () => {
+            updateDate();
+            getSingleEtud(etudid);
+            actualizeEtud(etudid);
+            updateSelect()
+            updateJustifyBtn();
+        })
 
 
         function setTimeLineTimes(a, b) {
diff --git a/app/templates/assiduites/widgets/conflict.j2 b/app/templates/assiduites/widgets/conflict.j2
index a461b267f..987cdfb21 100644
--- a/app/templates/assiduites/widgets/conflict.j2
+++ b/app/templates/assiduites/widgets/conflict.j2
@@ -270,14 +270,14 @@
                 ) {
                     const assiduite_avant = {
                         etat: this.selectedAssiduite.etat,
-                        date_debut: assiduite_debut.toIsoUtcString()(),
-                        date_fin: separtorDate.toIsoUtcString()(),
+                        date_debut: assiduite_debut.toFakeIso(),
+                        date_fin: separtorDate.toFakeIso(),
                     };
 
                     const assiduite_apres = {
                         etat: this.selectedAssiduite.etat,
-                        date_debut: separtorDate.toIsoUtcString()(),
-                        date_fin: assiduite_fin.toIsoUtcString()(),
+                        date_debut: separtorDate.toFakeIso(),
+                        date_fin: assiduite_fin.toFakeIso(),
                     };
 
                     if (this.selectedAssiduite.moduleimpl_id) {
diff --git a/app/templates/assiduites/widgets/differee.j2 b/app/templates/assiduites/widgets/differee.j2
index 65cfb3515..4b4e3cd41 100644
--- a/app/templates/assiduites/widgets/differee.j2
+++ b/app/templates/assiduites/widgets/differee.j2
@@ -285,10 +285,10 @@
     let currentDate = "{{date}}";
     if (currentDate == "") {
         currentDate = new Date();
-        currentDate = currentDate.format("YYYY-MM-DDTHH:mm");
+        currentDate = currentDate.toFakeIso();
     } else {
         currentDate = new Date(currentDate);
-        currentDate = currentDate.format("YYYY-MM-DDTHH:mm");
+        currentDate = currentDate.toFakeIso();
     }
 
 
@@ -439,7 +439,7 @@
             date = new Date(currentDate);
             const start = typeof mt_start !== 'undefined' ? mt_start : 0
             date.setHours(start);
-            date = date.format("YYYY-MM-DDTHH:mm")
+            date = date.toFakeIso()
         } else {
             date = last.value;
         }
@@ -555,14 +555,14 @@
         }
 
         if (get) {
-            getAssiduitesFromEtuds(false, d_debut.toIsoUtcString(), d_fin.toIsoUtcString())
+            getAssiduitesFromEtuds(false, d_debut.toFakeIso(), d_fin.toFakeIso())
             return 0x0;
         }
 
         return {
             moduleimpl: moduleSelect,
-            deb: d_debut.toIsoUtcString(),
-            fin: d_fin.toIsoUtcString(),
+            deb: d_debut.toFakeIso(),
+            fin: d_fin.toFakeIso(),
         }
 
 
@@ -653,6 +653,10 @@
         colIds.forEach((colid) => {
             getAndUpdateCol(colid)
         })
+
+        if (isSingleEtud()) {
+            actualizeEtud(etudid);
+        }
     }
 
     function launchToast(etudid, etat) {
diff --git a/app/templates/assiduites/widgets/minitimeline.j2 b/app/templates/assiduites/widgets/minitimeline.j2
index 80f4b4db2..1b8a68cb8 100644
--- a/app/templates/assiduites/widgets/minitimeline.j2
+++ b/app/templates/assiduites/widgets/minitimeline.j2
@@ -13,14 +13,13 @@
      */
     function createMiniTimeline(assiduitesArray, day = null) {
         const array = [...assiduitesArray];
-
-        const dateiso = day == null ? getDate().format("YYYY-MM-DD") : day;
+        const date = day == null ? getDate() : new Date(day);
         const timeline = document.createElement("div");
         timeline.className = "mini-timeline";
         if (isSingleEtud()) {
             timeline.classList.add("single");
         }
-        const timelineDate = new Date(dateiso).startOf("day");
+        const timelineDate = date.startOf("day");
         const dayStart = timelineDate.clone().add(mt_start, "hours");
         const dayEnd = timelineDate.clone().add(mt_end, "hours");
         const dayDuration = new Duration(dayStart, dayEnd).minutes;
@@ -36,12 +35,12 @@
                 date_fin: tlTimes.fin.format(),
                 etat: "CRENEAU",
             });
+
         }
 
         array.forEach((assiduité) => {
-            let startDate = new Date(assiduité.date_debut);
-            let endDate = new Date(assiduité.date_fin);
-
+            let startDate = new Date(Date.removeUTC(assiduité.date_debut));
+            let endDate = new Date(Date.removeUTC(assiduité.date_fin));
             if (startDate.isBefore(dayStart)) {
                 startDate = dayEnd.clone().startOf("day").add(mt_start, "hours");
             }
@@ -52,11 +51,12 @@
 
             const block = document.createElement("div");
             block.className = "mini-timeline-block";
-            const duration = new Duration(startDate, endDate).minutes;
-            const startOffset = new Duration(dayStart, startDate).minutes;
+            const duration = (new Duration(startDate, endDate)).minutes;
+            const startOffset = (new Duration(dayStart, startDate)).minutes;
             const leftPercentage = (startOffset / dayDuration) * 100;
             const widthPercentage = (duration / dayDuration) * 100;
 
+
             block.style.left = `${leftPercentage}%`;
             block.style.width = `${widthPercentage}%`;
 
diff --git a/app/templates/assiduites/widgets/moduleimpl_dynamic_selector.j2 b/app/templates/assiduites/widgets/moduleimpl_dynamic_selector.j2
index b82f655fc..84366dc62 100644
--- a/app/templates/assiduites/widgets/moduleimpl_dynamic_selector.j2
+++ b/app/templates/assiduites/widgets/moduleimpl_dynamic_selector.j2
@@ -21,9 +21,9 @@
     }
 
     function filterFormSemestres(semestres, dateIso) {
-        const date = new Date(dateIso);
+        const date = new Date(Date.removeUTC(dateIso));
         semestres = semestres.filter((fm) => {
-            return date.isBetween(new Date(fm.date_debut_iso), new Date(fm.date_fin_iso), '[]');
+            return date.isBetween(new Date(Date.removeUTC(fm.date_debut_iso)), new Date(Date.removeUTC(fm.date_fin_iso)), '[]');
         })
 
         return semestres;
diff --git a/app/templates/assiduites/widgets/tableau_assi.j2 b/app/templates/assiduites/widgets/tableau_assi.j2
index cc7f9d905..1b72ebbf1 100644
--- a/app/templates/assiduites/widgets/tableau_assi.j2
+++ b/app/templates/assiduites/widgets/tableau_assi.j2
@@ -83,7 +83,7 @@
             filterAssiduites.columns.forEach((k) => {
                 const td = document.createElement('td');
                 if (k.indexOf('date') != -1) {
-                    td.textContent = new Date(assiduite[k]).format(`DD/MM/Y HH:mm`)
+                    td.textContent = new Date(Date.removeUTC(assiduite[k])).format(`DD/MM/Y HH:mm`)
                 } else if (k.indexOf("module") != -1) {
                     td.textContent = getModuleImpl(assiduite);
                 } else if (k.indexOf('est_just') != -1) {
@@ -115,9 +115,9 @@
                 const user = getUser(data);
                 const module = getModuleImpl(data);
 
-                const date_debut = new Date(data.date_debut).format("DD/MM/YYYY HH:mm");
-                const date_fin = new Date(data.date_fin).format("DD/MM/YYYY HH:mm");
-                const entry_date = new Date(data.entry_date).format("DD/MM/YYYY HH:mm");
+                const date_debut = new Date(Date.removeUTC(data.date_debut)).format("DD/MM/YYYY HH:mm");
+                const date_fin = new Date(Date.removeUTC(data.date_fin)).format("DD/MM/YYYY HH:mm");
+                const entry_date = new Date(Date.removeUTC(data.entry_date)).format("DD/MM/YYYY HH:mm");
 
                 const etat = data.etat.capitalize();
                 const desc = data.desc == null ? "" : data.desc;
@@ -433,7 +433,7 @@
                     if (l.querySelector(`#${key}_time`).value != "") {
                         filterAssiduites.filters[key] = {
                             pref: pref,
-                            time: new Date(time)
+                            time: new Date(Date.removeUTC(time))
                         }
                     }
                 } else if (key.indexOf('etat') != -1) {
diff --git a/app/templates/assiduites/widgets/tableau_base.j2 b/app/templates/assiduites/widgets/tableau_base.j2
index cd94b8087..2eb5e34e5 100644
--- a/app/templates/assiduites/widgets/tableau_base.j2
+++ b/app/templates/assiduites/widgets/tableau_base.j2
@@ -75,7 +75,7 @@
                     }
                 }
                 if (k.indexOf('date') != -1) {
-                    const assi_time = new Date(el[k]);
+                    const assi_time = new Date(Date.removeUTC(el[k]));
                     const filter_time = f[k].time;
                     switch (f[k].pref) {
 
@@ -262,8 +262,8 @@
                 let keyValueB = b[keyword];
 
                 if (keyword.indexOf("date") != -1) {
-                    keyValueA = new Date(keyValueA)
-                    keyValueB = new Date(keyValueB)
+                    keyValueA = new Date(Date.removeUTC(keyValueA))
+                    keyValueB = new Date(Date.removeUTC(keyValueB))
                 }
 
                 if (keyword.indexOf("module") != -1) {
diff --git a/app/templates/assiduites/widgets/tableau_justi.j2 b/app/templates/assiduites/widgets/tableau_justi.j2
index 78b4fd70d..33ac3317f 100644
--- a/app/templates/assiduites/widgets/tableau_justi.j2
+++ b/app/templates/assiduites/widgets/tableau_justi.j2
@@ -82,7 +82,7 @@
             filterJustificatifs.columns.forEach((k) => {
                 const td = document.createElement('td');
                 if (k.indexOf('date') != -1) {
-                    td.textContent = new Date(justificatif[k]).format(`DD/MM/Y HH:mm`)
+                    td.textContent = new Date(Date.removeUTC(justificatif[k])).format(`DD/MM/Y HH:mm`)
                 } else if (k.indexOf('fichier') != -1) {
                     td.textContent = justificatif.fichier ? "Oui" : "Non";
                 } else if (k.indexOf('etudid') != -1) {
@@ -120,9 +120,9 @@
             path,
             (data) => {
                 const user = getUser(data);
-                const date_debut = new Date(data.date_debut).format("DD/MM/YYYY HH:mm");
-                const date_fin = new Date(data.date_fin).format("DD/MM/YYYY HH:mm");
-                const entry_date = new Date(data.entry_date).format("DD/MM/YYYY HH:mm");
+                const date_debut = new Date(Date.removeUTC(data.date_debut)).format("DD/MM/YYYY HH:mm");
+                const date_fin = new Date(Date.removeUTC(data.date_fin)).format("DD/MM/YYYY HH:mm");
+                const entry_date = new Date(Date.removeUTC(data.entry_date)).format("DD/MM/YYYY HH:mm");
 
                 const etat = data.etat.capitalize();
                 const desc = data.raison == null ? "" : data.raison;
@@ -305,8 +305,8 @@
 
                 assiEdit.querySelector('#justi_etat').value = data.etat.toLowerCase();
                 assiEdit.querySelector('#justi_raison').value = desc;
-                const d_deb = new Date(data.date_debut).format("YYYY-MM-DDTHH:mm")
-                const d_fin = new Date(data.date_fin).format("YYYY-MM-DDTHH:mm")
+                const d_deb = new Date(Date.removeUTC(data.date_debut)).format("YYYY-MM-DDTHH:mm")
+                const d_fin = new Date(Date.removeUTC(data.date_fin)).format("YYYY-MM-DDTHH:mm")
                 assiEdit.querySelector('#justi_date_debut').value = d_deb
                 assiEdit.querySelector('#justi_date_fin').value = d_fin
 
@@ -356,8 +356,8 @@
                         openAlertModal("Dates erronées", document.createTextNode('Les dates sont invalides'));
                         return true
                     }
-                    date_debut = new Date(date_debut)
-                    date_fin = new Date(date_fin)
+                    date_debut = new Date(Date.removeUTC(date_debut))
+                    date_fin = new Date(Date.removeUTC(date_fin))
 
                     if (date_debut >= date_fin) {
                         openAlertModal("Dates erronées", document.createTextNode('La date de fin doit être après la date de début'));
@@ -625,7 +625,7 @@
                     if (l.querySelector(`#${key}_time`).value != "") {
                         filterJustificatifs.filters[key] = {
                             pref: pref,
-                            time: new Date(time)
+                            time: new Date(Date.removeUTC(time))
                         }
                     }
                 } else if (key.indexOf('etat') != -1) {
diff --git a/app/templates/base.j2 b/app/templates/base.j2
index ab7207539..717a6af0d 100644
--- a/app/templates/base.j2
+++ b/app/templates/base.j2
@@ -72,7 +72,7 @@
 </div>
 
 <script>
-    setTimeout(function() {
+    setTimeout(function () {
         var flashes = document.getElementsByClassName("flashes")[0];
         if (flashes) {
             flashes.style.display = "none";
@@ -93,5 +93,6 @@
 <script src="{{scu.STATIC_DIR}}/js/scodoc.js"></script>
 <script>
     const SCO_URL = "{{ url_for('scolar.index_html', scodoc_dept=g.scodoc_dept)[:-11] }}";
+    const SCO_TIMEZONE = {{ scu.TIME_ZONE }}
 </script>
-{% endblock %}
+{% endblock %}
\ No newline at end of file
diff --git a/app/templates/bul_head.j2 b/app/templates/bul_head.j2
index 91acfb3d9..8c725f012 100644
--- a/app/templates/bul_head.j2
+++ b/app/templates/bul_head.j2
@@ -18,8 +18,12 @@
             Bulletin
             <span class="bull_liensemestre">
             {{formsemestre.html_link_status() | safe}}
-            {% if formsemestre.etuds_inscriptions[etud.id].parcour %}
-                <span class="parcours">Parcours {{formsemestre.etuds_inscriptions[etud.id].parcour.code}}</span>
+            {% if etud.id in formsemestre.etuds_inscriptions %}
+                {% if formsemestre.etuds_inscriptions[etud.id].parcour %}
+                    <span class="parcours">Parcours {{formsemestre.etuds_inscriptions[etud.id].parcour.code}}</span>
+                {% endif %}
+            {% else %}
+                <span class="parcours">{{scu.EMO_WARNING|safe}} non inscrit !?</span>
             {% endif %}
             </span>
         </div>
@@ -67,8 +71,8 @@
                 )}}">version courte spéciale BUT</a>
             {% endif %}
             <a style="margin-left: 32px;" class="stdlink"
-            href="{{url_for('notes.validation_rcues', 
-                scodoc_dept=g.scodoc_dept, etudid=etud.id, 
+            href="{{url_for('notes.validation_rcues',
+                scodoc_dept=g.scodoc_dept, etudid=etud.id,
                 formsemestre_id=formsemestre.id
             )}}">visualiser les compétences BUT</a>
         </div>
diff --git a/sco_version.py b/sco_version.py
index e8a195ffc..21b533cd9 100644
--- a/sco_version.py
+++ b/sco_version.py
@@ -1,7 +1,7 @@
 # -*- mode: python -*-
 # -*- coding: utf-8 -*-
 
-SCOVERSION = "9.6.58"
+SCOVERSION = "9.6.60"
 
 SCONAME = "ScoDoc"