Notification::getLastCheckTimestamp

static function getLastCheckTimestamp()
{
	$result = false;
	$option = (int) Option::get(static::MODULE_ID, static::OPTION_LAST_CHECK_NOTIFICATION, 0);
	if ($option > 0)
	{
		$result = $option + static::$timestampNotifyDays;
	}

	return $result;
}