Ends After Weekend
$meta_query = array( array( 'key' => 'event_start_timestamp', 'value' => '$friday', 'compare' => '>=', ), array( 'key' => 'event_start_timestamp', 'value' => '$sunday', 'compare' => '<=', ), );
$meta_query = array( array( 'key' => 'event_start_timestamp', 'value' => '$friday', 'compare' => '>=', ), array( 'key' => 'event_start_timestamp', 'value' => '$sunday', 'compare' => '<=', ), );