Exibir post de acordo com horário real

Olá pessoal, preciso exibir o post de acordo com o horário inserido na edição. Seria algo como: "se horário real é igual ou maior ao inicial e horário real é menor ou igual ao final, exibir post referente a determinado horário." Porque da forma que está, ele exibe todos os posts cadastrados. :/ Segue o código:

<?php
add_shortcode('show_schedule', 'show_schedule');

$days = array('sun'=>'Sunday','mon'=>'Monday','tue'=>'Tuesday','wed'=>'Wednesday','thu'=>'Thursday','fri'=>'Friday','sat'=>'Saturday');

//Register Schdule Post Type

add_action( 'init', 'register_my_dj_schedule' );

function register_my_dj_schedule() {

 $labels = array(
 'name' => _x( 'Dj Schedule', 'dj_schedule' ),
 'singular_name' => _x( 'Dj Schedule', 'dj_schedule' ),
 'add_new' => _x( 'Add New', 'dj_schedule' ),
 'add_new_item' => _x( 'Add New Schedule', 'dj_schedule' ),
 'edit_item' => _x( 'Edit Dj Schedule', 'dj_schedule' ),
 'new_item' => _x( 'New Dj Schedule', 'dj_schedule' ),
 'view_item' => _x( 'View Dj Schedule', 'dj_schedule' ),
 'search_items' => _x( 'Search Dj Schedule', 'dj_schedule' ),
 'not_found' => _x( 'No dj schedule found', 'dj_schedule' ),
 'not_found_in_trash' => _x( 'No dj schedule found in Trash', 'dj_schedule' ),
 'parent_item_colon' => _x( 'Parent Dj Schedule:', 'dj_schedule' ),
 'menu_name' => _x( 'Dj Schedule', 'dj_schedule' ),
 );

 $args = array(
 'labels' => $labels,
 'hierarchical' => true,
 'description' => 'WordPress DJ Schedule',
 'supports' => array( 'title', 'editor', 'thumbnail' ),
 'taxonomies' => array( 'category', 'dj_schedule' ),
 'public' => true,
 'show_ui' => true,
 'show_in_menu' => true,

 'show_in_nav_menus' => true,
 'publicly_queryable' => true,
 'exclude_from_search' => false,
 'has_archive' => true,
 'query_var' => true,
 'can_export' => true,
 'rewrite' => true,
 'capability_type' => 'post'
 );

 register_post_type( 'dj_schedule', $args );
}

//Register DJs Post Type

add_action( 'init', 'register_my_radios_djs' );

function register_my_radios_djs() {
 $labels = array(
 'name' => _x( 'Radio Djs', 'radios_djs' ),
 'singular_name' => _x( 'Radio Dj', 'radios_djs' ),
 'add_new' => _x( 'Add New', 'radios_djs' ),
 'add_new_item' => _x( 'Add New Dj', 'radios_djs' ),
 'edit_item' => _x( 'Edit Dj', 'radios_djs' ),
 'new_item' => _x( 'New Dj', 'radios_djs' ),
 'view_item' => _x( 'View Dj', 'radios_djs' ),
 'search_items' => _x( 'Search Dj', 'radios_djs' ),
 'not_found' => _x( 'No dj found', 'radios_djs' ),
 'not_found_in_trash' => _x( 'No dj found in Trash', 'radios_djs' ),
 'parent_item_colon' => _x( 'Parent Dj:', 'radios_djs' ),
 'menu_name' => _x( 'Radio Djs', 'radios_djs' ),
 );
 $args = array(
 'labels' => $labels,
 'hierarchical' => true,
 'description' => 'WordPress Radio DJS',
 'supports' => array( 'title', 'editor', 'thumbnail' ),
 'taxonomies' => array( 'category', 'radios_djs' ),
 'public' => true,
 'show_ui' => true,
 'show_in_menu' => true,
 'show_in_nav_menus' => true,
 'publicly_queryable' => true,
 'exclude_from_search' => false,
 'has_archive' => true,
 'query_var' => true,
 'can_export' => true,
 'rewrite' => true,
 'capability_type' => 'post'
 );

 register_post_type( 'radios_djs', $args );
}

if ( function_exists( 'add_theme_support' ) ) {
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 150, 150, true );
add_image_size( 'dj-pic', 260, 160 );
}

add_action( 'add_meta_boxes', 'rschedule_box' );
add_action( 'save_post', 'dj_schedule_save_postdata' );

function rschedule_box() {
 add_meta_box(
 'time_slot_id',
 __( 'Time Slots', 'time_slot_text' ),
 'radio_time_slots',
 'dj_schedule'
 );
 add_meta_box(
 'dj_select_id',
 __( 'Select DJ', 'dj_select_text' ),
 'radio_get_dj_select_box',
 'dj_schedule',
	'side'
 );
}

function radio_get_dj_select_box($post)

wp_nonce_field( 'radio_schedule', 'schedule_noncename' );
 echo '<label for="dj_id">';
 _e("DJ/Host", 'dj_id' );
 echo '</label> ';
	$args = array( 'post_type' => 'radios_djs');
	$loop = new WP_Query( $args );
	echo '<select name="dj_id" id="dj_id">';
	foreach($loop->posts as $dj):
	if($dj->ID == get_post_meta( $post->ID, 'dj_id', true ))
	{
 $select = 'selected';
	}else{
 $select = '';
	}
 echo '<option value="'.$dj->ID.'" '.$select.'>'.$dj->post_title.'</option>';
	endforeach;
	echo '</select>';
}
$days = array('sun'=>'Sunday','mon'=>'Monday','tue'=>'Tuesday','wed'=>'Wednesday','thu'=>'Thursday','fri'=>'Friday','sat'=>'Saturday');
function schedule_time_select($selected)

$start = 8*60+0;
$end = 24*60+0;
echo '<option value="0">N/A</option>'; //Default Value
for($time = $start; $time<=$end; $time += 15)

	$minute = $time%60;
	$hour = ($time-$minute)/60;
	if($selected == sprintf('%02d:%02d', $hour, $minute))
	{
 $select = 'selected';
	}else{
 $select = '';
	}
	echo '<option value='.sprintf('%02d:%02d', $hour, $minute).' '.$select.'>'.sprintf('%02d:%02d', $hour, $minute).'</option>';
}
}

function radio_time_slots($post) {

 global $days;
 // Use nonce for verification
 wp_nonce_field( 'radio_schedule', 'schedule_noncename' );

 foreach($days as $key=>$value){
 $selected_start = get_post_meta( $post->ID, 'schdule_dj-start-'.$key, true ); //Start Time
 $selected_end = get_post_meta( $post->ID, 'schdule_dj-end-'.$key, true ); //End Time

 echo '<strong>'.$value.'</strong><br />';
 echo '<label for="schdule_dj-start-'.$key.'">';
 _e("Start", 'schdule_dj-start-'.$key );
 echo '</label> ';
 echo '<select name="schdule_dj-start-'.$key.'" id="schdule_dj-start-'.$key.'">';
 schedule_time_select($selected_start);
 echo '</select>';
 echo '<label for="schdule_dj-end-'.$key.'">';
 _e("End", 'schdule_dj-end-'.$key );
 echo '</label> ';
 echo '<select name="schdule_dj-end-'.$key.'" id="schdule_dj-end-'.$key.'">';
 schedule_time_select($selected_end);
 echo '</select>';
 echo '<br />';
 }
}

//Save Meta Data

function dj_schedule_save_postdata( $post_id ) {
 if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
 return;

 if ( !wp_verify_nonce( $_POST['schedule_noncename'], 'radio_schedule' ) )
 return;

 if ( 'page' == $_POST['post_type'] )
 {
 if ( !current_user_can( 'edit_page', $post_id ) )
 return;
 }
 else
 {
 if ( !current_user_can( 'edit_post', $post_id ) )
 return;
 }

 if( isset( $_POST['dj_id'] ) ){
	update_post_meta( $post_id,'dj_id', esc_attr( $_POST['dj_id'] ) );
}

 global $days;

 foreach($days as $key=>$value){

	if( isset( $_POST['schdule_dj-start-'.$key] ) ){
	update_post_meta( $post_id,'schdule_dj-start-'.$key, esc_attr( $_POST['schdule_dj-start-'.$key] ) );
	}

	if( isset( $_POST['schdule_dj-end-'.$key] ) ){
 update_post_meta( $post_id,'schdule_dj-end-'.$key, esc_attr( $_POST['schdule_dj-end-'.$key] ) );
	}
}
}

function show_schedule() {
global $days;
 $html='';
	$html.= '<div>';
	$args = array( 'post_type' => 'dj_schedule');
 $loop = new WP_Query( $args );
 foreach($loop->posts as $item):
 $html.= '<div class="scheduleBox">';
 $html.= '<h3>'.$item->post_title.'</h3>';
 $dj_id = get_post_meta($item->ID, 'dj_id', true);
 $dj = get_post($dj_id);
 $html.= '<div>'.$dj->post_title.'</div>';
 $html.= '<div>'.get_the_post_thumbnail($dj->ID, 'dj-pic').'</div>';
 foreach($days as $key=>$value){
 $start = get_post_meta($item->ID, 'schdule_dj-start-'.$key, true);
 $end = get_post_meta($item->ID, 'schdule_dj-end-'.$key, true);
 if ( $start <> 0 )

 $html.= '<div id="time">'.$value.' '.$start.'-'.$end.'</div>';

 }
 $html.= '</div>';
 endforeach;
 $html.= '<div style="clear:both;"></div>';
 $html.='</div>';
return $html;

}

add_shortcode('show_schedule', 'show_schedule');