Changes to holidays and the overlap between this year and the previous year

app/Models/Holiday.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Holiday extends Model
+{
+    protected $fillable = [
+        'date',
+        'title',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'date' => 'date',
+        ];
+    }
+}

app/Models/User.php

@@ -111,16 +111,17 @@ class User extends Authenticatable
                 if (!$date) {
                     continue;
                 }
-                $month = $date->format('%B');
+                $key = sprintf('%04d-%02d', $date->getYear(), $date->getMonth());
 
-                if (!isset($result[$month])) {
-                    $result[$month] = [];
+                if (!isset($result[$key])) {
+                    $result[$key] = [];
                 }
 
-                $result[$month][] = $att;
+                $result[$key][] = $att;
             }
         }
 
+        krsort($result);
 
         return $result;
     }