diff --git a/vendor/magento/module-backend/Block/Dashboard/Totals.php b/vendor/magento/module-backend/Block/Dashboard/Totals.php
index 73e6bc1ab9e8..4bdcd24d2b61 100644
--- a/vendor/magento/module-backend/Block/Dashboard/Totals.php
+++ b/vendor/magento/module-backend/Block/Dashboard/Totals.php
@@ -13,6 +13,7 @@
 use Magento\Reports\Model\ResourceModel\Order\Collection;
 use Magento\Reports\Model\ResourceModel\Order\CollectionFactory;
 use Magento\Store\Model\Store;
+use Magento\Framework\App\ObjectManager;
 
 /**
  * Adminhtml dashboard totals bar
@@ -31,19 +32,27 @@ class Totals extends Bar
      */
     protected $_moduleManager;
 
+    /**
+     * @var Period
+     */
+    private $period;
+
     /**
      * @param Context $context
      * @param CollectionFactory $collectionFactory
      * @param Manager $moduleManager
      * @param array $data
+     * @param Period|null $period
      */
     public function __construct(
         Context $context,
         CollectionFactory $collectionFactory,
         Manager $moduleManager,
-        array $data = []
+        array $data = [],
+        ?Period $period = null
     ) {
         $this->_moduleManager = $moduleManager;
+        $this->period = $period ?? ObjectManager::getInstance()->get(Period::class);
         parent::__construct($context, $collectionFactory, $data);
     }
 
@@ -63,7 +72,8 @@ protected function _prepareLayout()
         ) || $this->getRequest()->getParam(
             'group'
         );
-        $period = $this->getRequest()->getParam('period', Period::PERIOD_24_HOURS);
+        $firstPeriod = array_key_first($this->period->getDatePeriods());
+        $period = $this->getRequest()->getParam('period', $firstPeriod);
 
         /* @var $collection Collection */
         $collection = $this->_collectionFactory->create()->addCreateAtPeriodFilter(
diff --git a/vendor/magento/module-backend/Model/Dashboard/Chart/Date.php b/vendor/magento/module-backend/Model/Dashboard/Chart/Date.php
index 2d1e5e977eaf..ab2ca43ef13f 100644
--- a/vendor/magento/module-backend/Model/Dashboard/Chart/Date.php
+++ b/vendor/magento/module-backend/Model/Dashboard/Chart/Date.php
@@ -7,6 +7,7 @@
 
 namespace Magento\Backend\Model\Dashboard\Chart;
 
+use DateTimeZone;
 use Magento\Backend\Model\Dashboard\Period;
 use Magento\Framework\Stdlib\DateTime\TimezoneInterface;
 use Magento\Reports\Model\ResourceModel\Order\CollectionFactory;
@@ -54,40 +55,32 @@ public function getByPeriod(string $period): array
             '',
             true
         );
-
         $timezoneLocal = $this->localeDate->getConfigTimezone();
-        $localStartDate = new \DateTime($dateStart->format('Y-m-d H:i:s'), new \DateTimeZone($timezoneLocal));
-        $localEndDate = new \DateTime($dateEnd->format('Y-m-d H:i:s'), new \DateTimeZone($timezoneLocal));
+
+        $dateStart->setTimezone(new DateTimeZone($timezoneLocal));
+        $dateEnd->setTimezone(new DateTimeZone($timezoneLocal));
 
         if ($period === Period::PERIOD_24_HOURS) {
-            $localEndDate = new \DateTime('now', new \DateTimeZone($timezoneLocal));
-            $localStartDate = clone $localEndDate;
-            $localStartDate->modify('-1 day');
-            $localStartDate->modify('+1 hour');
-        } elseif ($period === Period::PERIOD_TODAY) {
-            $localEndDate->modify('now');
-        } else {
-            $localEndDate->setTime(23, 59, 59);
-            $localStartDate->setTime(0, 0, 0);
+            $dateEnd->modify('-1 hour');
         }
 
         $dates = [];
 
-        while ($localStartDate <= $localEndDate) {
+        while ($dateStart <= $dateEnd) {
             switch ($period) {
                 case Period::PERIOD_7_DAYS:
                 case Period::PERIOD_1_MONTH:
-                    $d = $localStartDate->format('Y-m-d');
-                    $localStartDate->modify('+1 day');
+                    $d = $dateStart->format('Y-m-d');
+                    $dateStart->modify('+1 day');
                     break;
                 case Period::PERIOD_1_YEAR:
                 case Period::PERIOD_2_YEARS:
-                    $d = $localStartDate->format('Y-m');
-                    $localStartDate->modify('first day of next month');
+                    $d = $dateStart->format('Y-m');
+                    $dateStart->modify('first day of next month');
                     break;
                 default:
-                    $d = $localStartDate->format('Y-m-d H:00');
-                    $localStartDate->modify('+1 hour');
+                    $d = $dateStart->format('Y-m-d H:00');
+                    $dateStart->modify('+1 hour');
             }
 
             $dates[] = $d;
diff --git a/vendor/magento/module-reports/Model/ResourceModel/Order/Collection.php b/vendor/magento/module-reports/Model/ResourceModel/Order/Collection.php
index 67e451c4c591..736733a2f980 100644
--- a/vendor/magento/module-reports/Model/ResourceModel/Order/Collection.php
+++ b/vendor/magento/module-reports/Model/ResourceModel/Order/Collection.php
@@ -7,6 +7,7 @@
 namespace Magento\Reports\Model\ResourceModel\Order;
 
 use Magento\Framework\DB\Select;
+use DateTimeZone;
 
 /**
  * Reports orders collection
@@ -411,19 +412,22 @@ protected function _getTZRangeExpressionForAttribute($range, $attribute, $tzFrom
     public function getDateRange($range, $customStart, $customEnd, $returnObjects = false)
     {
         $dateEnd = new \DateTime();
-        $dateStart = new \DateTime();
+        $timezoneLocal = $this->_localeDate->getConfigTimezone();
+
+        $dateEnd->setTimezone(new DateTimeZone($timezoneLocal));
 
         // go to the end of a day
         $dateEnd->setTime(23, 59, 59);
 
+        $dateStart = clone $dateEnd;
         $dateStart->setTime(0, 0, 0);
 
         switch ($range) {
             case 'today':
-                $dateEnd->modify('now');
+                $dateEnd = new \DateTime('now', new \DateTimeZone($timezoneLocal));
                 break;
             case '24h':
-                $dateEnd = new \DateTime();
+                $dateEnd = new \DateTime('now', new \DateTimeZone($timezoneLocal));
                 $dateEnd->modify('+1 hour');
                 $dateStart = clone $dateEnd;
                 $dateStart->modify('-1 day');
@@ -468,7 +472,8 @@ public function getDateRange($range, $customStart, $customEnd, $returnObjects =
                 }
                 break;
         }
-
+        $dateStart->setTimezone(new DateTimeZone('UTC'));
+        $dateEnd->setTimezone(new DateTimeZone('UTC'));
         if ($returnObjects) {
             return [$dateStart, $dateEnd];
         } else {