<?php
    $ary     = array();
    $page    = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;
    $perpage = 10;
    $offset  = ( $page - 1 ) * $perpage;
    $args    = array(
        'posts_per_page' => $perpage
    );
    $query = new CFS_LFQ_Query( $args );
?>
<?php if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post(); ?>
    // something
<?php endwhile; ?>
<?php endif;?>
<?php wp_reset_postdata(); ?>

$dates   = array();
$args    = array(
    'posts_per_page' => -1,
    'calendar'       => true,       // Get the data for Not from the day but from the first day of the month.
);
$query = new CFS_LFQ_Query( $args );
if ( $query->have_posts() ) { while ( $query->have_posts() ) { $query->the_post();
    $date = date( 'Ymd', strtotime( $post->date ) );
    array_push( $dates, $date );
}}
wp_reset_postdata();

// Passing array to cfs_lfq Calendar Class.
$dates  = array_unique( $dates );		// Remove some Duplicate Values(Day)
$months = get_months_from_now( 3 );
$args = array(
    'dates'        => $dates,		// (array) (required) Array of event Date ('Ymd' format)
    'months'       => $months,		// (array) (required) Array of month to generate calendar ('Ym' format)
    'weekdayLabel' => 'default',	// (string) (optional) Available value: 'default' or 'en' Note: 'default' is based on your wordpress locale setting.
    'weekdayBase'  => 0,		// (integer) (optional) The start weekday. 0:sunday ～ 6:saturday Default: 0
    'element'      => 'div',		// (string) (optional) The element for wraping. Default: 'div'
    'class'        => ''		// (string) (optional) The 'class' attribute value for wrap element. Default: ''
);
cfs_lfq_calendar( $args );

$ary     = array();
$args    = array(
    'posts_per_page' => -1,
    'calendar'       => true		// Get the data for Not from the day but from the first day of the month.
);
$query = new CFS_LFQ_Query( $args );
if ( $query->have_posts() ) { while ( $query->have_posts() ) { $query->the_post();
    $date    = date( 'Ymd', strtotime( $post->date ) );
    $post_id = $post->ID;
    $perm    = get_the_permalink();
    $title   = get_the_title();
    array_push( $ary, array('date' => $date, 'id' => $post_id, 'permlink' => $perm, 'title' => $title) );
}}
wp_reset_postdata();

// Passing array to your Calendar Class.
require_once 'Calendar/Month/Weeks.php';
calendar( $ary, 0 );

<div id="date">
    <?php echo date( 'Y-m-d', strtotime( $post->date ) ); ?>
</div>
<time>
    <?php echo date( "H:i", strtotime( $post->starttime ) ); ?> ~ <?php echo date( "H:i", strtotime( $post->finishtime ) ); ?>
</time>

$months = get_months_from_now( 3 );

$args = array(
	'dates'        => $dates,
	'months'       => $months,
	'weekdayLabel' => 'default',
	'weekdayBase'  => 0,
	'element'      => 'div',
	'class'        => 'myclass'
);
cfs_lfq_calendar( $args );