diff --git a/config/database.js b/config/database.js
index 780f3cf..b145772 100644
--- a/config/database.js
+++ b/config/database.js
@@ -1,8 +1,16 @@
 // Configuration et initialisation de la base de données PostgreSQL
-const { Pool } = require('pg');
+const { Pool, types } = require('pg');
 const bcrypt = require('bcrypt');
 const logger = require('./logger');
 
+// IMPORTANT: Désactiver le parsing automatique des TIMESTAMPTZ en objets Date
+// Pour éviter les problèmes de timezone, on renvoie les dates comme strings ISO
+types.setTypeParser(1184, function(stringValue) {
+  // 1184 = TIMESTAMPTZ
+  // Renvoyer la string ISO au lieu d'un objet Date
+  return stringValue;
+});
+
 // Configuration PostgreSQL depuis DATABASE_URL ou variables d'environnement
 const DATABASE_URL = process.env.DATABASE_URL ||
   `postgresql://${process.env.PGUSER || 'noteflow'}:${process.env.PGPASSWORD || 'noteflow_secure_password_change_me'}@${process.env.PGHOST || 'localhost'}:${process.env.PGPORT || '5499'}/${process.env.PGDATABASE || 'noteflow'}`;
diff --git a/scripts/test-date-format.js b/scripts/test-date-format.js
new file mode 100755
index 0000000..4ae7b53
--- /dev/null
+++ b/scripts/test-date-format.js
@@ -0,0 +1,144 @@
+#!/usr/bin/env node
+
+// Test du format de date renvoyé par PostgreSQL
+const { Pool } = require('pg');
+
+const DATABASE_URL = process.env.DATABASE_URL;
+
+async function testDateFormat() {
+  const pool = new Pool({ connectionString: DATABASE_URL });
+
+  try {
+    console.log('\n╔════════════════════════════════════════════════════════════╗');
+    console.log('║   TEST FORMAT DATES POSTGRESQL → JAVASCRIPT              ║');
+    console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+    const client = await pool.connect();
+
+    // Insérer un événement de test
+    console.log('1️⃣  Insertion d\'un événement de test...\n');
+
+    await client.query('DELETE FROM calendar_events');
+
+    const testDate = '2025-11-14T10:00:00+01:00'; // 10h Paris
+    await client.query(`
+      INSERT INTO calendar_events
+        (google_event_id, user_id, title, description, start_time, end_time, all_day)
+      VALUES
+        ($1, 1, $2, $3, $4, $5, FALSE)
+    `, [
+      'test-event-123',
+      'Test Événement 10h Paris',
+      'Test timezone',
+      testDate,
+      testDate
+    ]);
+
+    console.log(`   Test inséré: ${testDate}`);
+    console.log('   (10h heure de Paris avec offset +01:00)\n');
+
+    // Récupérer l'événement
+    console.log('2️⃣  Récupération depuis PostgreSQL...\n');
+
+    const result = await client.query(`
+      SELECT
+        title,
+        start_time,
+        pg_typeof(start_time) as pg_type,
+        to_char(start_time, 'YYYY-MM-DD HH24:MI:SS TZ') as formatted_pg,
+        start_time::text as text_representation
+      FROM calendar_events
+      WHERE google_event_id = 'test-event-123'
+    `);
+
+    const event = result.rows[0];
+    console.log('   Côté PostgreSQL:');
+    console.log(`     Type: ${event.pg_type}`);
+    console.log(`     Formaté: ${event.formatted_pg}`);
+    console.log(`     Texte: ${event.text_representation}`);
+
+    console.log('\n   Côté JavaScript (driver pg):');
+    console.log(`     typeof start_time: ${typeof event.start_time}`);
+    console.log(`     start_time instanceof Date: ${event.start_time instanceof Date}`);
+    console.log(`     start_time value: ${event.start_time}`);
+
+    if (event.start_time instanceof Date) {
+      console.log(`     start_time.toISOString(): ${event.start_time.toISOString()}`);
+      console.log(`     start_time.getTime(): ${event.start_time.getTime()}`);
+      console.log(`     start_time.toString(): ${event.start_time.toString()}`);
+      console.log(`     start_time.toLocaleString('fr-FR'): ${event.start_time.toLocaleString('fr-FR')}`);
+      console.log(`     start_time.toLocaleString('fr-FR', {timeZone: 'Europe/Paris'}): ${event.start_time.toLocaleString('fr-FR', { timeZone: 'Europe/Paris' })}`);
+      console.log(`     start_time.toLocaleTimeString('fr-FR', {hour: '2-digit', minute: '2-digit'}): ${event.start_time.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' })}`);
+      console.log(`     start_time.toLocaleTimeString('fr-FR', {hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris'}): ${event.start_time.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris' })}`);
+    }
+
+    // Tester avec SELECT sans conversion
+    console.log('\n3️⃣  Test SELECT raw...\n');
+
+    const rawResult = await client.query(`
+      SELECT start_time FROM calendar_events WHERE google_event_id = 'test-event-123'
+    `);
+
+    const rawDate = rawResult.rows[0].start_time;
+    console.log(`   Raw date from SELECT: ${rawDate}`);
+    console.log(`   Type: ${typeof rawDate}`);
+
+    if (rawDate instanceof Date) {
+      const hours = rawDate.getHours();
+      const minutes = rawDate.getMinutes();
+      console.log(`   getHours(): ${hours}`);
+      console.log(`   getMinutes(): ${minutes}`);
+      console.log(`   UTC hours: ${rawDate.getUTCHours()}`);
+      console.log(`   UTC minutes: ${rawDate.getUTCMinutes()}`);
+    }
+
+    // Comparer avec la façon dont c'était fait avec SQLite
+    console.log('\n4️⃣  Simulation SQLite (string)...\n');
+
+    const sqliteLikeDate = new Date('2025-11-14T10:00:00+01:00');
+    console.log(`   new Date('2025-11-14T10:00:00+01:00'):`);
+    console.log(`     toLocaleTimeString: ${sqliteLikeDate.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' })}`);
+    console.log(`     getHours(): ${sqliteLikeDate.getHours()}`);
+
+    // Test avec string UTC
+    const utcString = '2025-11-14T09:00:00.000Z';
+    const dateFromUtc = new Date(utcString);
+    console.log(`\n   new Date('${utcString}'):`);
+    console.log(`     toLocaleTimeString: ${dateFromUtc.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit' })}`);
+    console.log(`     toLocaleTimeString (Europe/Paris): ${dateFromUtc.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris' })}`);
+    console.log(`     getHours(): ${dateFromUtc.getHours()}`);
+
+    console.log('\n╔════════════════════════════════════════════════════════════╗');
+    console.log('║                   DIAGNOSTIC COMPLET                       ║');
+    console.log('╚════════════════════════════════════════════════════════════╝\n');
+
+    console.log('📊 RÉSUMÉ:\n');
+
+    if (event.start_time instanceof Date) {
+      const pgHour = event.start_time.toLocaleTimeString('fr-FR', { hour: '2-digit', minute: '2-digit', timeZone: 'Europe/Paris' });
+      const expectedHour = '10:00';
+
+      if (pgHour === expectedHour) {
+        console.log(`   ✅ PostgreSQL renvoie la BONNE heure: ${pgHour}`);
+        console.log('   → Le problème est ailleurs (cache frontend?)\n');
+      } else {
+        console.log(`   ❌ PostgreSQL renvoie une MAUVAISE heure: ${pgHour}`);
+        console.log(`   → Attendu: ${expectedHour}`);
+        console.log(`   → Problème dans le stockage PostgreSQL\n`);
+      }
+    }
+
+    // Cleanup
+    await client.query('DELETE FROM calendar_events WHERE google_event_id = $1', ['test-event-123']);
+
+    client.release();
+    await pool.end();
+
+  } catch (error) {
+    console.error('\n❌ Erreur:', error.message);
+    console.error(error.stack);
+    process.exit(1);
+  }
+}
+
+testDateFormat();