Automattic / jetpack

		$two_dates = __( '%1$s – %2$s' , 'jetpack' );

		// we'll always have the start date. Maybe with time

		if ( $all_day )

			$date = date_i18n( $date_format, $start );

		else

			$date = sprintf( $date_with_time, date_i18n( $date_format, $start ), date_i18n( $time_format, $start ) );

		// single day, timed

		if ( $single_day && ! $all_day && false !== $end )

		// multi-day

		if ( ! $single_day ) {

			if ( $all_day ) {

				// DTEND for multi-day events represents "until", not "including", so subtract one minute

				$end_date = date_i18n( $date_format, $end - 60 );

			} else {

				$end_date = sprintf( $date_with_time, date_i18n( $date_format, $end ), date_i18n( $time_format, $end ) );

			}

			$date = sprintf( $two_dates, $date, $end_date );