I need to get order collection between specific date range passing start date and end date in Magento 2. For that I used filter created_at field using addAttributeToFilter().

First create Block file By default created_at field in sales_order table represent the time of order creation:

<?php
namespace VenderModulenameBlock;
class OrderRange extends MagentoFrameworkViewElementTemplate
{
 public function __construct(
 MagentoFrameworkViewElementTemplateContext $context,
 MagentoSalesModelResourceModelOrderCollectionFactory $orderCollectionFactory,
 array $data = []
 ) {
 $this->orderCollectionFactory = $orderCollectionFactory;
 parent::__construct($context, $data);
 }

 /* Here Create Function For Order collection between start and end date */
 public function getOrderCollectionByDateRange(){
 $startDate = date("Y-m-d h:i:s",strtotime('0000-00-00')); // start date
 $endDate = date("Y-m-d h:i:s", strtotime('0000-00-00')); // end date

 $orders = $this->orderCollectionFactory->create()
 ->addAttributeToFilter('created_at', array('from'=>$startDate, 'to'=>$endDate));
 return $orders;
 }
?>

After do this You need to call this function in any custom template file or any exsting template,

if($orders->getTotalCount() > 0) { 
 foreach($orders as $_order) {
 echo "<pre>";print_r($_order); echo "</pre>";
 }
}

Now you can get Order collection by date range.