diff --git a/app/Http/Controllers/Api/v1/CustomerController.php b/app/Http/Controllers/Api/v1/CustomerController.php
index 458a417..e05f4bf 100644
--- a/app/Http/Controllers/Api/v1/CustomerController.php
+++ b/app/Http/Controllers/Api/v1/CustomerController.php
@@ -143,7 +143,7 @@ class CustomerController extends Controller
             if (!$calendars->isEmpty()) {
                 $pub = false;
                 foreach ($calendars as $calendar) {
-                    if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                    if ($calendar->isPublished()) {
                         $pub = true;
                     }
                 }
@@ -217,7 +217,7 @@ class CustomerController extends Controller
                 if (!$calendars->isEmpty()) {
                     $published = false;
                     foreach ($calendars as $calendar) {
-                        if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                        if ($calendar->isPublished()) {
                             $published = true;
                         }
                     }
diff --git a/app/Http/Controllers/Api/v1/MurController.php b/app/Http/Controllers/Api/v1/MurController.php
index b8ee182..1e115ab 100644
--- a/app/Http/Controllers/Api/v1/MurController.php
+++ b/app/Http/Controllers/Api/v1/MurController.php
@@ -39,7 +39,7 @@ class MurController extends Controller
             if (!$calendars->isEmpty()) {
                 $pub = false;
                 foreach ($calendars as $calendar) {
-                    if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                    if ($calendar->isPublished()) {
                         $pub = true;
                     }
                 }
diff --git a/app/Models/Calendrier.php b/app/Models/Calendrier.php
index 12da07e..9bedb97 100644
--- a/app/Models/Calendrier.php
+++ b/app/Models/Calendrier.php
@@ -39,4 +39,16 @@ class Calendrier extends Model
     {
         return $this->belongsTo('App\Models\Coupon', 'calendrier_couponId');
     }
+
+    // * METHODS
+
+    /**
+     * Check if the current date is between the calendar publication dates.
+     *
+     * @return boolean
+     */
+    public function isPublished(): bool
+    {
+        return now()->betweenIncluded($this->calendrier_startdate, $this->calendrier_enddate->endOfDay());
+    }
 }
diff --git a/app/Traits/CouponTrait.php b/app/Traits/CouponTrait.php
index 3848025..dee077c 100644
--- a/app/Traits/CouponTrait.php
+++ b/app/Traits/CouponTrait.php
@@ -45,7 +45,7 @@ trait CouponTrait
             if (isset($calendars) && !$calendars->isEmpty()) {
                 $pub = false;
                 foreach ($calendars as $calendar) {
-                    if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                    if ($calendar->isPublished()) {
                         $pub = true;
                     }
                 }
@@ -86,7 +86,7 @@ trait CouponTrait
             if (isset($calendars) && !$calendars->isEmpty()) {
                 $pub = false;
                 foreach ($calendars as $calendar) {
-                    if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                    if ($calendar->isPublished()) {
                         $pub = true;
                     }
                 }
@@ -128,7 +128,7 @@ trait CouponTrait
             if (isset($calendars) && !$calendars->isEmpty()) {
                 $pub = false;
                 foreach ($calendars as $calendar) {
-                    if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                    if ($calendar->isPublished()) {
                         $pub = true;
                     }
                 }
@@ -179,7 +179,7 @@ trait CouponTrait
         if (isset($calendars) && !$calendars->isEmpty()) {
             $pub = false;
             foreach ($calendars as $calendar) {
-                if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                if ($calendar->isPublished()) {
                     $pub = true;
                 }
             }
@@ -211,7 +211,7 @@ trait CouponTrait
         if (isset($calendars) && !$calendars->isEmpty()) {
             $pub = false;
             foreach ($calendars as $calendar) {
-                if (strtotime(date('Y-m-d H:i:s')) > strtotime($calendar->calendrier_startdate) && strtotime(date('Y-m-d H:i:s')) < strtotime($calendar->calendrier_enddate)) {
+                if ($calendar->isPublished()) {
                     $pub = true;
                 }
             }
diff --git a/database/migrations/2026_06_11_141125_alter_calendrier_table.php b/database/migrations/2026_06_11_141125_alter_calendrier_table.php
new file mode 100644
index 0000000..17aaada
--- /dev/null
+++ b/database/migrations/2026_06_11_141125_alter_calendrier_table.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+class AlterCalendrierTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('calendrier', function (Blueprint $table) {
+            $table->date('calendrier_startdate')->default(DB::raw("1970-01-01"))->change();
+            $table->date('calendrier_enddate')->default(DB::raw("1970-01-01"))->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('calendrier', function (Blueprint $table) {
+            $table->timestamp('calendrier_startdate')->default(DB::raw("1970-01-01 00:00:01"))->change();
+            $table->timestamp('calendrier_enddate')->default(DB::raw("1970-01-01 00:00:01"))->change();
+        });
+    }
+}
diff --git a/resources/js/app.js b/resources/js/app.js
index 1549c0b..36b6baa 100644
--- a/resources/js/app.js
+++ b/resources/js/app.js
@@ -33,7 +33,7 @@ const changeIcon = $('.marque')
 const dropDownMarque = $('.marque-select')
 
 // FancyBox Communes
-// Confirmation 
+// Confirmation
 $.fancyConfirm = function( opts ) {
     opts  = $.extend( true, {
       title     : 'Are you sure?',
@@ -42,7 +42,7 @@ $.fancyConfirm = function( opts ) {
       noButton  : 'Cancel',
       callback  : $.noop
     }, opts || {} );
-  
+
     $.fancybox.open({
       type : 'html',
       src  :
@@ -68,7 +68,7 @@ $.fancyConfirm = function( opts ) {
         afterClose : function( instance, current, e ) {
           var button = e ? e.target || e.currentTarget : null;
           var value  = button ? $(button).data('value') : 0;
-  
+
           opts.callback( value );
         }
       }
@@ -84,7 +84,7 @@ $.fancyConfirm = function( opts ) {
       noButton  : 'Cancel',
       callback  : $.noop
     }, opts || {} );
-  
+
     $.fancybox.open({
       type : 'html',
       src  :
@@ -92,7 +92,7 @@ $.fancyConfirm = function( opts ) {
       '<h3 class="info">' + opts.title   + '</h3>' +
       '<p>'  + opts.message + '</p>' +
       '<p class="tright">' +
-      '<a data-value="0" data-fancybox-close>' + opts.noButton + '</a>' + 
+      '<a data-value="0" data-fancybox-close>' + opts.noButton + '</a>' +
       '<button data-value="1" data-fancybox-close class="btn">' + opts.okButton + '</button>' +
       '</p>' +
       '</div>',