CComponentUtil::GetDateTimeFormatted

static function GetDateTimeFormatted($timestamp, $dateTimeFormat = false, $offset = 0, $hideToday = false)
{
	if (is_array($timestamp))
	{
		$params = $timestamp;
		$timestamp = ($params['TIMESTAMP'] ?? false);
		$offset = (isset($params['TZ_OFFSET']) ? intval($params['TZ_OFFSET']) : 0);
		$hideToday = ($params['HIDE_TODAY'] ?? false);
	}

	if (empty($timestamp))
	{
		return '';
	}

	$culture = BitrixMainContext::getCurrent()->getCulture();
	$timeFormat = $culture->getShortTimeFormat();
	$dateTimeFormat = $culture->getLongDateFormat().' '.$timeFormat;
	$dateTimeFormatWOYear = $culture->getDayMonthFormat().' '.$timeFormat;

	$arFormat = array(
		"tomorrow" => "tomorrow, ".$timeFormat,
		"today" => ($hideToday ? $timeFormat : "today, ".$timeFormat),
		"yesterday" => "yesterday, ".$timeFormat,
		"" => (
			date("Y", $timestamp) == date("Y")
				? $dateTimeFormatWOYear
				: $dateTimeFormat
		)
	);

	return FormatDate($arFormat, $timestamp, (time() + $offset));
}