Custom Date Format for meta value - Generate Press

functions.php

<?php

add_filter( 'render_block', function( $block_content, $block ) {
    
    $field_name = 'start_date'; // ACF field name
    $postId = false;
    $format = 'M j, Y g:i A'; // date format
    $class = 'format-date'; // Additional CSS Class on block to find
    $string = 'start_date'; // string of text to replace with date
    $date = get_field( $field_name );    
	
	$formatted_date = date($format, strtotime($date));
    
	if (
        !is_admin() 
        && ! empty( $block['attrs']['className'] )
        && $class === $block['attrs']['className']
        ){
            $block_content = str_replace( $string , $formatted_date , $block_content );
    }
    
    return $block_content;

}, 10, 2 );