Why does `inclusive` not work in this wordpress loop?

Question

It's seemingly simple, I have this loop which should loads posts from, and including the current post.

<?php
$categories = get_the_category();
foreach( $categories as $category ) {
  $catID[] = $category->cat_ID;
} 
$args = array(
    'category__in' = > $catID,
    'category__not_in' = > 1,
    'posts_per_page' = > 10,
    'date_query' = > array(
        array(
            'before' = > get_the_date()
        ),
        'inclusive' = > true, 
    )
);
$loop = new WP_Query($args);
while ($loop -> have_posts()) {
$loop -> the_post();
  get_template_part( 'sidebar-posts-template' );
}
wp_reset_postdata();
?>

The problem is that it doesn't include the current post. Why?

Edit: This loop, using a fixed date also does not work and will start loading posts from the 27th, not including the 28th. The inclusive date should include posts from the 28th.

$args = array(
    'date_query' = > array(
        array(
            'after' = > 'January 1st, 2013',
            'before' = > array(
                'year' = > 2013,
                'month' = > 2,
                'day' = > 28, 
             ),
            'inclusive' = > true, 
        ), 
    ),
    'posts_per_page' = > -1, );

Edit 2: This is now the loop I am using.

$args = array(
    'category__in' => $catID,
    'category__not_in' => 1,
    'posts_per_page'=>10,
    'date_query' => array(
        array(
            'before' => get_the_date(),
            'inclusive' => true, 
        ),
    )
);

Edit 3:

$args = array(
    'posts_per_page'=>10,
    'date_query' => array(
        array(
          'before'    => array(
         'year'  => 2013,
         'month' => 2,
         'day'   => 28,
           ),
          'inclusive' => true 
        ),
     )
);

Answer 1

Edit 3

Now, combine Edits 1 and 2:

'date_query' = > array(
    array(
        'before' = > strtotime( get_the_date() ),
        'inclusive' = > true, 
    )
)

Edit 2

You don't have your inclusive parameter inside the correct array.

Change this:

'date_query' = > array(
    array(
        'before' = > get_the_date()
    ),
    'inclusive' = > true, 
)

...to this:

'date_query' = > array(
    array(
        'before' = > get_the_date(),
        'inclusive' = > true, 
    )
)

Edit

The get_the_date() function must be used inside the loop, because it relies on the $post global.

The get_the_date() function also returns a date-formatted string, but the date_query before parameter accepts a strtotime() compatible string.

Instead of this:

'before' => get_the_date()

...try this:

'before' => strtotime( get_the_date() )

Original Answer

The inclusive parameter is part of the WP_Query() date_query parameter, and must be used inside of the array passed to date_parameter. Refer to the example usage in the Codex:

$args = array(
    'date_query' => array(
        array(
            'after'     => 'January 1st, 2013',
            'before'    => array(
                'year'  => 2013,
                'month' => 2,
                'day'   => 28,
            ),
            'inclusive' => true,
        ),
    ),
    'posts_per_page' => -1,
);
$query = new WP_Query( $args );

Answer 2

I had problems using get_the_date() so I ended up getting the post date as it is in the database.

<? php
global $post;
$postTime = $post -> post_date;
$args = array(
    'category__in' => $catID,
    'category__not_in' => 1,
    'posts_per_page' => 10,
    'date_query' => array(
array(
    'before' => $postTime,
    'inclusive' => true 
), ));
$loop = new WP_Query($args);
while ($loop -> have_posts()) {
    $loop -> the_post();
    get_template_part('sidebar-posts-template');
}
wp_reset_postdata(); ?> 

The important piece of code is

global $post;
$postTime = $post -> post_date;

The variable $postTime is what made inclusive work.