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',
+        ];
+    }
+}