<?php
$event = '';
if ( is_null( $event ) ) {
    global $post;
    $event = $post;
}

if ( is_numeric( $event ) ) {
    $event = get_post( $event );
}

$schedule                 = '<span class="date-start on-single-event">';
$format = ' M d \'y';
$date_with_year_format    = tribe_get_date_format( true );

$settings = array(
    'show_end_time' => true,
    'time'          => true,
);

$settings = wp_parse_args( apply_filters( 'tribe_events_event_schedule_details_formatting', $settings ), $settings );
if ( ! $settings['time'] ) {
    $settings['show_end_time'] = false;
}
extract( $settings );

//if ( tribe_event_is_multiday( $event ) ) { // multi-date event

    //$format2ndday = apply_filters( 'tribe_format_second_date_in_range', $format, $event );

    $schedule .= tribe_get_start_date( $event, false, $format );
//}

$schedule .= '</span>';

echo ($schedule);