CEventCalendar::GetCalendarModificationLabel

static function GetCalendarModificationLabel($calendarId)
{
	[$iblockId, $sectionId, $subSectionId] = $calendarId;

	$arFilter = array(
		"IBLOCK_ID" => $iblockId,
		"ACTIVE" => "Y",
		"CHECK_PERMISSIONS" => "N",
		"INCLUDE_SUBSECTIONS" => "Y",
	);
	if ($sectionId > 0)
		$arFilter["SECTION_ID"] = ($subSectionId > 0 ? $subSectionId : $sectionId);

	$dbResult = CIBlockElement::GetList(array('TIMESTAMP_X' => 'DESC'), $arFilter, false, false, array("ID", "IBLOCK_ID", "TIMESTAMP_X"));
	if ($arResult = $dbResult->Fetch())
		return $arResult["TIMESTAMP_X"];

	return "";
}