Pterodactyl-Panel/database/migrations/2021_01_13_013420_add_cron_month.php

<?php

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class AddCronMonth extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('schedules', function (Blueprint $table) {
            $table->string('cron_month')->after('cron_day_of_week');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('schedules', function (Blueprint $table) {
            $table->dropColumn('cron_month');
        });
    }
}