Format ACF Date Output on Front End

See – https://support.advancedcustomfields.com/forums/topic/date-output/

<?php
$date_variable = get_field( 'date_variable' );
$date_format_in = 'Y-m-d';
$date_format_out = 'm/d/Y';
$date = DateTime::createFromFormat( $date_format_in, $date_variable );

echo $date->format( $date_format_out );