osb/app/Models/Tax.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Tax extends Model
{
	protected $table = 'ab_tax';
	const CREATED_AT = 'date_orig';
	const UPDATED_AT = 'date_last';

	protected $dates = ['date_orig','date_last'];
	public $dateFormat = 'U';
}