<?php
// Current
$now_time = time() + get_option( 'gmt_offset' ) * HOUR_IN_SECONDS;
$args = array(
'post_type' => array('exhibitions'),
'posts_per_page' => -1,
'meta_key' => 'event_timestrap_start',
'orderby' => 'meta_value_num',
'order' => 'ASC',
'meta_query' => array(
array(
'key' => 'event_timestrap_end',
'value' => $now_time,
'compare' => '>'
),
array(
'key' => 'event_timestrap_start',
'value' => $now_time,
'compare' => '<'
)
)
);
$exhibitions = new WP_Query($args);
?>
$current = $exhibitions->filterBy('startdate', 'date <=', 'today')->filterBy('enddate', 'date >=', 'today');
p.s. I know it is not elegant, but sometimes I wish there was a WP vs KB category