in the arcade there should be a message saying when the active pass expires. you can play around with this in the arcade/modules/mod_arcade.php file
PHP Code:
$the_links = '<span class="smallfont"><b>' . ( $vbulletin->userinfo['credits_ibp_pass'] > TIMENOW ? construct_phrase($GLOBALS['vbphrase']['credits_ibp_passexpires'], vbdate($vbulletin->options['dateformat'] . ', ' . $vbulletin->options['timeformat'], $vbulletin->userinfo['credits_ibp_pass']), $GLOBALS['vbphrase']['credits']) : construct_phrase($GLOBALS['vbphrase']['credits_ibp_buypass'], vb_number_format($vbulletin->userinfo['creditperms']['credit_ibp_passcost'], $vbulletin->options['credits_decimals']), $GLOBALS['vbphrase']['credits'], $vbulletin->session->vars['sessionurl']) ) . '</b></span><br />' . $the_links;