event posts to list in descending order of date

I am using a theme that has a slider built in for events, only problem I am having is the events are listed in the slider by the date they are posted. I would like to list in descending order of the event date.

<script>
jQuery(document).ready(function($) {

    var showcase_dup = jQuery('#showcase').clone();
    showcase_dup.attr('id', 'showcase-dup');
    showcase_dup.hide();
    jQuery('body').append(showcase_dup);

    function ShowcaseDefaults()
    {
        jQuery("#showcase").awShowcase({
            content_width:($(window).width() <= 1024) ? ($(window).width()<=745) ? 300 : 700 : 953,
            content_height:($(window).width() <= 1024) ? ($(window).width()<=745) ? 499 : 366 : 499,
            fit_to_parent:            false,
            auto:                     true,
            interval:                 6000,
            continuous:               true,
            loading:                  true,
            tooltip_width:            200,
            tooltip_icon_width:       32,
            tooltip_icon_height:      20,
            tooltip_offsetx:          18,
            tooltip_offsety:          0,
            arrows:                   false,
            buttons:                  true,
            btn_numbers:              false,
            keybord_keys:             true,
            mousetrace:               false,
            pauseonover:              true,
            stoponclick:              true,
            transition:               'fade',
            transition_delay:         300,
            transition_speed:         500,
            show_caption:             'onhover',
            thumbnails:($(window).width() <= 1024) ? ($(window).width()<=745) ? true : false : true,
            thumbnails_position:      'outside-last',
            thumbnails_direction:     'vertical',
            thumbnails_slidex:         0,
            dynamic_height:            false,
            speed_change:              true,
            viewline:                  false
        });
    }

    ShowcaseDefaults();

    jQuery(window).resize(function(){
        jQuery('#showcase').replaceWith(jQuery('#showcase-dup').clone().attr('id', 'showcase').show());
        ShowcaseDefaults();
    })
});
</script>
<?php  $terms = get_terms('events');
if(!empty($terms))
{
    $first = array_shift($terms);
    $link =  get_term_link( $first, 'events' );
}
?>
<div class="header_slider">
    <div id="showcase" class="showcase" >
        <?php foreach ($slider['slides'] as $slide):?>
            <div class="showcase-slide">
                <div class="showcase-content">
                    <a href="<?php echo $slide['slide_url'];?>"><img src="<?php echo $slide['slide_src'];?>" alt /></a>
                </div>
                <div class="showcase-caption">
                  <h4><?php echo $slide['slide_desc'];?></h4>
                </div>
                <div class="showcase-thumbnail">
                    <div class="showcase-thumbnail-content">
                        <h5> <a href="<?php echo $slide['slide_url'];?>" style="color:#ffffff;"><?php echo $slide['slide_title'];?></a></h5>
                        <p><?php echo $slide['slide_title2'];?></p>
                    </div>
                    <div class="slider-date">
                        <span class="month"><?php echo $slide['slide_date_month'];?></span>
                        <span class="date text_yellow"><?php echo $slide['slide_date_day'];?></span>
                    </div>
                </div>
            </div>
        <?php endforeach;?>
        <div class="showcase-button">
            <span class="btn-up"><?php _e('UPCOMING EVENTS','tfuse');?></span>
            <a href="<?php echo $link;?>" class="btn-down"><span><?php _e('VIEW ALL EVENTS','tfuse');?></span></a>
        </div>
    </div>
</div>