gistfile1.aw

<?php

add_action( 'pre_get_posts', 'be_tag_sort_order' );
/**
 * Change the post order for certain tags
 * 
 * @author Bill Erickson
 * @link http://www.billerickson.net/customize-the-wordpress-query/
 * @param object $query data
 *
 */
function be_tag_sort_order( $query ) {

	if( $query->is_main_query() && $query->is_tag( array( 'genesis-explained', 'actions', 'filters', 'functions', 'admin' ) ) ) {
		$query->set( 'orderby', 'date' );
		$query->set( 'order', 'ASC' );
	}

}