parking_manage_system/app/Models/EventCalendar.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class EventCalendar extends Model
{
    use HasFactory, SoftDeletes;

    protected $table = 'event_calendar';

    protected $fillable
        = [
            'pattern_id',
            'start_time',
            'end_time',
            'admin_user_id',
            'status'
        ];

    protected $hidden
        = [
            'created_at',
            'updated_at',
            'deleted_at'
        ];

    public function getStartTimeAttribute($value): string
    {
        return get_datetime('date_time', strtotime($value));
    }

    public function getEndTimeAttribute($value): string
    {
        return get_datetime('date_time', strtotime($value));
    }
}