diff --git a/scripts/force-fix-calendar-timezone.js b/scripts/force-fix-calendar-timezone.js
new file mode 100755
index 0000000..3431602
--- /dev/null
+++ b/scripts/force-fix-calendar-timezone.js
@@ -0,0 +1,155 @@
+#!/usr/bin/env node
+
+// Script de correction forcée du timezone Google Calendar
+const { Pool } = require('pg');
+
+const DATABASE_URL = process.env.DATABASE_URL;
+
+if (!DATABASE_URL) {
+  console.error('❌ DATABASE_URL non définie');
+  process.exit(1);
+}
+
+async function forceFixTimezone() {
+  const pool = new Pool({ connectionString: DATABASE_URL });
+
+  try {
+    console.log('\n╔════════════════════════════════════════════════════════════╗');
+    console.log('║   CORRECTION FORCÉE TIMEZONE GOOGLE CALENDAR              ║');
+    console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+    const client = await pool.connect();
+
+    // 1. Vérifier l'état actuel
+    console.log('📊 ÉTAT ACTUEL:\n');
+
+    const typeCheck = await client.query(`
+      SELECT column_name, data_type
+      FROM information_schema.columns
+      WHERE table_name = 'calendar_events'
+        AND column_name IN ('start_time', 'end_time')
+    `);
+
+    console.log('Types de colonnes:');
+    typeCheck.rows.forEach(row => {
+      const icon = row.data_type.includes('with time zone') ? '✅' : '❌';
+      console.log(`  ${icon} ${row.column_name}: ${row.data_type}`);
+    });
+
+    const eventCount = await client.query('SELECT COUNT(*) FROM calendar_events');
+    console.log(`\nNombre d'événements: ${eventCount.rows[0].count}`);
+
+    if (parseInt(eventCount.rows[0].count) > 0) {
+      const sample = await client.query(`
+        SELECT
+          title,
+          start_time,
+          pg_typeof(start_time) as type,
+          to_char(start_time, 'YYYY-MM-DD HH24:MI:SS TZ') as formatted
+        FROM calendar_events
+        ORDER BY start_time ASC
+        LIMIT 3
+      `);
+
+      console.log('\nExemples d\'événements:');
+      sample.rows.forEach((evt, i) => {
+        console.log(`\n  ${i + 1}. ${evt.title}`);
+        console.log(`     Type: ${evt.type}`);
+        console.log(`     Valeur brute: ${evt.start_time}`);
+        console.log(`     Formaté: ${evt.formatted}`);
+      });
+    }
+
+    // 2. CORRECTION FORCÉE
+    console.log('\n\n🔧 CORRECTION FORCÉE:\n');
+
+    const needsFix = typeCheck.rows.some(row =>
+      !row.data_type.includes('with time zone')
+    );
+
+    if (!needsFix && parseInt(eventCount.rows[0].count) === 0) {
+      console.log('✅ Les colonnes sont déjà en TIMESTAMPTZ');
+      console.log('✅ Aucun événement corrompu');
+      console.log('\n💡 Resynchronisez Google Calendar depuis l\'interface web\n');
+      client.release();
+      await pool.end();
+      return;
+    }
+
+    console.log('Étape 1: Suppression de TOUS les événements...');
+    const deleted = await client.query('DELETE FROM calendar_events');
+    console.log(`  ✅ ${deleted.rowCount} événement(s) supprimé(s)\n`);
+
+    if (needsFix) {
+      console.log('Étape 2: Conversion des colonnes en TIMESTAMPTZ...');
+
+      await client.query('BEGIN');
+
+      try {
+        await client.query(`
+          ALTER TABLE calendar_events
+            ALTER COLUMN start_time TYPE TIMESTAMPTZ
+            USING start_time AT TIME ZONE 'Europe/Paris'
+        `);
+        console.log('  ✅ start_time → TIMESTAMPTZ');
+
+        await client.query(`
+          ALTER TABLE calendar_events
+            ALTER COLUMN end_time TYPE TIMESTAMPTZ
+            USING end_time AT TIME ZONE 'Europe/Paris'
+        `);
+        console.log('  ✅ end_time → TIMESTAMPTZ');
+
+        await client.query('COMMIT');
+      } catch (error) {
+        await client.query('ROLLBACK');
+        console.error('  ❌ Erreur:', error.message);
+        throw error;
+      }
+    }
+
+    // 3. Vérification finale
+    console.log('\n📊 VÉRIFICATION FINALE:\n');
+
+    const finalCheck = await client.query(`
+      SELECT column_name, data_type
+      FROM information_schema.columns
+      WHERE table_name = 'calendar_events'
+        AND column_name IN ('start_time', 'end_time')
+    `);
+
+    console.log('Types de colonnes après correction:');
+    finalCheck.rows.forEach(row => {
+      const icon = row.data_type.includes('with time zone') ? '✅' : '❌';
+      console.log(`  ${icon} ${row.column_name}: ${row.data_type}`);
+    });
+
+    const finalCount = await client.query('SELECT COUNT(*) FROM calendar_events');
+    console.log(`\nNombre d'événements: ${finalCount.rows[0].count} (devrait être 0)`);
+
+    console.log('\n╔════════════════════════════════════════════════════════════╗');
+    console.log('║                  ✅ CORRECTION TERMINÉE                    ║');
+    console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+    console.log('📝 PROCHAINES ÉTAPES:\n');
+    console.log('1. Ouvrez l\'interface web: http://localhost:2222');
+    console.log('2. Allez dans Admin → Google Calendar');
+    console.log('3. Cliquez sur le bouton "Synchroniser"');
+    console.log('4. Vérifiez que les heures correspondent maintenant\n');
+
+    console.log('🔍 POUR VÉRIFIER:\n');
+    console.log('- Regardez un événement dans Google Calendar (ex: 10h00)');
+    console.log('- Comparez avec l\'affichage dans NoteFlow');
+    console.log('- Les heures doivent être IDENTIQUES (pas de +1h ou -1h)\n');
+
+    client.release();
+    await pool.end();
+
+  } catch (error) {
+    console.error('\n❌ Erreur:', error.message);
+    console.error(error.stack);
+    process.exit(1);
+  }
+}
+
+forceFixTimezone();
diff --git a/src/pages/Index.tsx b/src/pages/Index.tsx
index 4423911..cd8bbbf 100644
--- a/src/pages/Index.tsx
+++ b/src/pages/Index.tsx
@@ -758,7 +758,7 @@ const Index = () => {
                 Rendez-vous dans moins de 30 minutes : {upcomingAlert.title}
               </span>
               <span className="text-sm opacity-90">
-                à {new Date(upcomingAlert.start_time).toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' })}
+                à {new Date(upcomingAlert.start_time).toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris' })}
               </span>
             </div>
             <Button
@@ -901,8 +901,8 @@ const Index = () => {
                                 <h4 className="font-medium line-clamp-2 text-sm">{event.title}</h4>
                               </div>
                               <p className="text-xs text-muted-foreground">
-                                {isToday ? "Aujourd'hui" : startDate.toLocaleDateString('fr-FR', { day: '2-digit', month: '2-digit' })}
-                                {isAllDay ? ' - Toute la journée' : ` à ${startDate.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' })}`}
+                                {isToday ? "Aujourd'hui" : startDate.toLocaleDateString('fr-FR', { day: '2-digit', month: '2-digit', timeZone: 'Europe/Paris' })}
+                                {isAllDay ? ' - Toute la journée' : ` à ${startDate.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris' })}`}
                               </p>
                               {event.location && (
                                 <p className="text-xs text-muted-foreground mt-1 truncate">