<?php
use_helper('Date') 
echo format_date($date) 
echo format_date($date, 'd', 'en') 
echo format_datetime($date)
echo format_date($date, 'MM/yyyy') 
echo format_daterange($start_date, $end_date, 'MM/yy', 'from %s to %s', 'starting from %s', 'until %s')