$manager = new MongoDB\Driver\Manager($server);
$query = new MongoDB\Driver\Query(array('_id' => '361fd737-7147-4a39-88e5-68fb5a543c7b'));
$cursor = $manager->executeQuery('base.test', $query);

dateWhen >= dateBegin AND dateWhen <= dateEnd

<input type="date" name="start" value="2018-08-08" min="2018-08-08" max="2020-12-31" />

$beginDate = $name["start"];