diff --git a/countdown.php b/countdown.php
index c19d2dd..6e1e9e4 100644
--- a/countdown.php
+++ b/countdown.php
@@ -113,7 +113,7 @@ setSecurityHeaders();
                     ];
 
                     foreach($timezones as $name => $timezone):
-                        $targetDateLocal = new DateTime(COUNTDOWN_TARGET_DATE, new DateTimeZone('Indian/Reunion'));
+                        $targetDateLocal = new DateTime(COUNTDOWN_TARGET_DATE, new DateTimeZone(DEFAULT_TIMEZONE));
                         $targetDateLocal->setTimezone(new DateTimeZone($timezone));
 
                         // Vérifier si c'est un jour différent
diff --git a/direct.php b/direct.php
index 42ee2be..6965ce0 100644
--- a/direct.php
+++ b/direct.php
@@ -170,12 +170,12 @@ $liveStream = getLiveStream();
                                 <i class="fas fa-calendar-alt"></i>
                                 <?php
                                 if (!empty(NEXT_LIVE_DATE)) {
-                                    $liveDate = new DateTime(NEXT_LIVE_DATE, new DateTimeZone('Indian/Reunion'));
+                                    $liveDate = new DateTime(NEXT_LIVE_DATE, new DateTimeZone(DEFAULT_TIMEZONE));
                                     $dayFormatter = new IntlDateFormatter(
                                         'fr_FR',
                                         IntlDateFormatter::FULL,
                                         IntlDateFormatter::NONE,
-                                        'Indian/Reunion',
+                                        DEFAULT_TIMEZONE,
                                         IntlDateFormatter::GREGORIAN,
                                         'EEEE d MMMM'
                                     );
@@ -205,7 +205,7 @@ $liveStream = getLiveStream();
                                                 'fr_FR',
                                                 IntlDateFormatter::FULL,
                                                 IntlDateFormatter::SHORT,
-                                                'Indian/Reunion'
+                                                DEFAULT_TIMEZONE
                                             );
                                             echo $formatter->format($liveDate);
 
diff --git a/includes/config.default.php b/includes/config.default.php
index e1bb0e4..10322d6 100644
--- a/includes/config.default.php
+++ b/includes/config.default.php
@@ -58,6 +58,10 @@ if (!defined('SITE_DESCRIPTION')) define('SITE_DESCRIPTION', 'Votre plateforme d
 if (!defined('SITE_LOGO')) define('SITE_LOGO', 'img/logo.png');
 if (!defined('SITE_FAVICON')) define('SITE_FAVICON', 'img/favicon.png');
 
+// Configuration du fuseau horaire par défaut
+// Liste des fuseaux disponibles : https://www.php.net/manual/fr/timezones.php
+if (!defined('DEFAULT_TIMEZONE')) define('DEFAULT_TIMEZONE', 'Indian/Reunion');
+
 // Réseaux sociaux
 if (!defined('FACEBOOK_URL')) define('FACEBOOK_URL', '#');
 if (!defined('X_URL')) define('X_URL', '#');
diff --git a/includes/config.local.php.sample b/includes/config.local.php.sample
index 53029c0..33b1b65 100644
--- a/includes/config.local.php.sample
+++ b/includes/config.local.php.sample
@@ -136,6 +136,10 @@ define('PRIORITY_CATEGORIES', [
 // Favicon du site
 // define('SITE_FAVICON', 'img/favicon.png');
 
+// Fuseau horaire par défaut pour l'affichage des dates
+// Liste des fuseaux disponibles : https://www.php.net/manual/fr/timezones.php
+// define('DEFAULT_TIMEZONE', 'Indian/Reunion');
+
 // =========================================
 // Réseaux sociaux
 // =========================================
diff --git a/includes/config.php b/includes/config.php
index d7440b3..617be78 100644
--- a/includes/config.php
+++ b/includes/config.php
@@ -23,7 +23,7 @@ if (file_exists($config_default_file)) {
 
 // Locale et fuseau horaire
 setlocale(LC_TIME, 'fr_FR.UTF-8');
-date_default_timezone_set('Indian/Reunion');
+date_default_timezone_set(DEFAULT_TIMEZONE);
 
 // Initialisation des catégories de vidéo depuis l'API
 $peertube_categories = initCategories();
diff --git a/index.php b/index.php
index 5bc7d8e..8129324 100644
--- a/index.php
+++ b/index.php
@@ -160,12 +160,12 @@ setSecurityHeaders();
                                 <i class="fas fa-calendar-alt"></i>
                                 <?php
                                 if (!empty(NEXT_LIVE_DATE)) {
-                                    $liveDate = new DateTime(NEXT_LIVE_DATE, new DateTimeZone('Indian/Reunion'));
+                                    $liveDate = new DateTime(NEXT_LIVE_DATE, new DateTimeZone(DEFAULT_TIMEZONE));
                                     $dayFormatter = new IntlDateFormatter(
                                         'fr_FR',
                                         IntlDateFormatter::FULL,
                                         IntlDateFormatter::NONE,
-                                        'Indian/Reunion',
+                                        DEFAULT_TIMEZONE,
                                         IntlDateFormatter::GREGORIAN,
                                         'EEEE d MMMM'
                                     );
@@ -195,7 +195,7 @@ setSecurityHeaders();
                                                 'fr_FR',
                                                 IntlDateFormatter::FULL,
                                                 IntlDateFormatter::SHORT,
-                                                'Indian/Reunion'
+                                                DEFAULT_TIMEZONE
                                             );
                                             echo $formatter->format($liveDate);