I use ACF pro for my wordpress. My datepicker field is a repeater field.
I need to return only the day.
my code :
<?php
if( have_rows('dates') ):
while ( have_rows('dates') ) : the_row();
echo get_sub_field('date')."</br>";
endwhile;
else :
echo __( 'No dates available.','mywebsite' );
endif;
?>
You can set the return value of the date field.
EDIT
Ok, so if you want to display two dates, one full and one is only day, you first need the return value to be the full date, for this example lets day it d/m/Y
$full_date = get_sub_field('date'); // the full date (format d/m/Y);
$day_from_date = DateTime::createFromFormat('d/m/Y', $full_date)->format('d'); // will get the day from the $full_date
This will get you the result you need.
See DateTime::createFromFormat for more information about the method