Hello
Yes, You can format date in module config (option date format)
And you can see guide in
php.net/manual/en/datetime.formats.date.php
And you can delete "until" text in file module/mod_jo_facebookevents/tmpl/default.php go to line 110
Change
<?php echo date($params->get('dateformat'), strtotime($fbevent["start_time"]))?><?php if($fbevent["end_time"] !=""){?><?php echo JText::_("MOD_JO_FACEBOOKEVENTS_UNTIL") ?><?php echo date($params->get('dateformat'), strtotime($fbevent["end_time"]))?><?php }?>
To
<?php echo date($params->get('dateformat'), strtotime($fbevent["start_time"]))?><?php if($fbevent["end_time"] !=""){?> - <?php echo date($params->get('dateformat'), strtotime($fbevent["end_time"]))?><?php }?>
Or can you send me joomla administrator via contact form? So we can help you
Best regards
Bach Pham