add_action( 'genesis_before_entry_content','sri_add_date');
function sri_add_date () {

  if ( is_home() || is_archive() || is_singular('post' ) ) { ?>
        <div class="my-date">
            <span class="my-date-day"><?php echo do_shortcode("[post_date format='j']"); ?></span>
            <span class="my-date-month"><?php echo do_shortcode("[post_date format='M']"); ?></span>
        </div>
    <?php }

}

//* Customize the post info function
add_filter( 'genesis_post_info', 'sp_post_info_filter' );
function sp_post_info_filter($post_info) {

    if ( is_home() || is_archive() ) {
        $post_info = '[post_comments] [post_edit]';
    }
    else {
        $post_info = '[post_date] by [post_author_posts_link] [post_comments] [post_edit]';
    }
    return $post_info;
}