我想Date Parameters 就是你要找的东西。

因此，如果您想从给定的时间获取帖子，可以构造如下查询：

$hour_posts = new WP_Query( array(
\'date_query\' => array(
    array(
        \'before\' => \'2019-05-08 10:00\',
    ),
    array(
        \'after\'  => \'2019-05-08 09:00\',
    ),
),
\'posts_per_page\' => -1,
) );

$args = array(
    \'date_query\' => array(
        array(
            \'hour\'      => 9,
            \'compare\'   => \'>=\',
        ),
        array(
            \'hour\'      => 10,
            \'compare\'   => \'<\'
    ),
    \'posts_per_page\' => -1,
);
$query = new WP_Query( $args );

Solved!!!

//set up the round figure of this hour
$timeWithoutA  = date(\'h:\')."00";
$curr_time  = date(\'h\').":00".date(\'a\');

//Add 1 hour to current hour
$timestamp = strtotime($timeWithoutA) + 60*60;
$addedOneHour = date(\'h:ia\', $timestamp);


//Today\'s date
$this_date = getdate();
$year = $this_date[\'year\'];
$mon = $this_date[\'mon\'];
$day = $this_date[\'mday\'];
$today = $year."-".$mon."-".$day;

//Add them together
$after = $today." ".$curr_time;
$before  = $today." ".$addedOneHour;

$custArgs = array(
    \'post_type\' => \'payment\',
    \'date_query\' => array(
        array(
            \'before\' => $before,
        ),
        array(
            \'after\'  => $after,
        )
    )
);
$query = new WP_Query ( $custArgs );


while($query->have_posts()) : $query->the_post(); 
    echo "hello"."<br />";
endwhile;