protected function correctSavedData($insert)
    {
        if ($insert) {

            $tzShiftSec = intval(date('Z')); // server time zone shift in seconds: west UTC <0, east UTC >0
            if (!empty($tzShiftSec)) {//var_dump($tzShiftSec);exit;
                $now = new Expression("DATE_SUB(NOW(), INTERVAL {$tzShiftSec} SECOND)"); // UTC time
            } else {
                $now = new Expression('NOW()'); // server time
            }
            $this->create_time = $now;
            if (empty($this->show_from_time)) $this->show_from_time = $now;
            $this->owner_id = Yii::$app->user->identity->id;
        } else {
/*
            // this corrections move to controller to POST preprocessing
            if (!empty($this->timezoneshift)) {//var_dump($this->attributes);var_dump($this->timezoneshift);
                $tz = intval($this->timezoneshift);
                $this->show_from_time = new Expression("DATE_ADD('{$this->show_from_time}', INTERVAL {$tz} MINUTE)");
                $this->show_to_time   = new Expression("DATE_ADD('{$this->show_to_time}',   INTERVAL {$tz} MINUTE)");
            }//var_dump($this->attributes);exit;
*/
        }
    }