diff --git a/samples/Reading_workbook_data/Properties.php b/samples/Reading_workbook_data/Properties.php
index 5bf25b8e..8f7be375 100644
--- a/samples/Reading_workbook_data/Properties.php
+++ b/samples/Reading_workbook_data/Properties.php
@@ -1,6 +1,7 @@
 <?php
 
 use PhpOffice\PhpSpreadsheet\IOFactory;
+use PhpOffice\PhpSpreadsheet\Shared\Date;
 
 require __DIR__ . '/../Header.php';
 
@@ -18,9 +19,8 @@ $helper->log('<b>Document Creator: </b>' . $creator);
 
 // Read the Date when the workbook was created (as a PHP timestamp value)
 $creationDatestamp = $spreadsheet->getProperties()->getCreated();
-// Format the date and time using the standard PHP date() function
-$creationDate = date('l, d<\s\up>S</\s\up> F Y', $creationDatestamp);
-$creationTime = date('g:i A', $creationDatestamp);
+$creationDate = Date::formattedDateTimeFromTimestamp("$creationDatestamp", 'l, d<\s\up>S</\s\up> F Y');
+$creationTime = Date::formattedDateTimeFromTimestamp("$creationDatestamp", 'g:i A');
 $helper->log('<b>Created On: </b>' . $creationDate . ' at ' . $creationTime);
 
 // Read the name of the last person to modify this workbook
@@ -30,8 +30,8 @@ $helper->log('<b>Last Modified By: </b>' . $modifiedBy);
 // Read the Date when the workbook was last modified (as a PHP timestamp value)
 $modifiedDatestamp = $spreadsheet->getProperties()->getModified();
 // Format the date and time using the standard PHP date() function
-$modifiedDate = date('l, d<\s\up>S</\s\up> F Y', $modifiedDatestamp);
-$modifiedTime = date('g:i A', $modifiedDatestamp);
+$modifiedDate = Date::formattedDateTimeFromTimestamp("$modifiedDatestamp", 'l, d<\s\up>S</\s\up> F Y');
+$modifiedTime = Date::formattedDateTimeFromTimestamp("$modifiedDatestamp", 'g:i A');
 $helper->log('<b>Last Modified On: </b>' . $modifiedDate . ' at ' . $modifiedTime);
 
 // Read the workbook title property
diff --git a/src/PhpSpreadsheet/Shared/Date.php b/src/PhpSpreadsheet/Shared/Date.php
index 7d4319c3..7ddce046 100644
--- a/src/PhpSpreadsheet/Shared/Date.php
+++ b/src/PhpSpreadsheet/Shared/Date.php
@@ -501,14 +501,17 @@ class Date
         return $day;
     }
 
-    public static function dateTimeFromTimestamp(string $date): DateTime
+    public static function dateTimeFromTimestamp(string $date, ?DateTimeZone $timeZone = null): DateTime
     {
-        return DateTime::createFromFormat('U', $date) ?: new DateTime();
+        $dtobj = DateTime::createFromFormat('U', $date) ?: new DateTime();
+        $dtobj->setTimeZone($timeZone ?? self::getDefaultOrLocalTimezone());
+
+        return $dtobj;
     }
 
-    public static function formattedDateTimeFromTimestamp(string $date, string $format): string
+    public static function formattedDateTimeFromTimestamp(string $date, string $format, ?DateTimeZone $timeZone = null): string
     {
-        $dtobj = self::dateTimeFromTimestamp($date);
+        $dtobj = self::dateTimeFromTimestamp($date, $timeZone);
 
         return $dtobj->format($format);
     }
diff --git a/src/PhpSpreadsheet/Writer/Ods/Meta.php b/src/PhpSpreadsheet/Writer/Ods/Meta.php
index 9504ed7c..16f7c8b5 100644
--- a/src/PhpSpreadsheet/Writer/Ods/Meta.php
+++ b/src/PhpSpreadsheet/Writer/Ods/Meta.php
@@ -82,7 +82,7 @@ class Meta extends WriterPart
         return $objWriter->getData();
     }
 
-    private function writeDocPropsCustom(XMLWriter $objWriter, Spreadsheet $spreadsheet): void
+    private static function writeDocPropsCustom(XMLWriter $objWriter, Spreadsheet $spreadsheet): void
     {
         $customPropertyList = $spreadsheet->getProperties()->getCustomProperties();
         foreach ($customPropertyList as $key => $customProperty) {
@@ -106,7 +106,7 @@ class Meta extends WriterPart
                     break;
                 case Properties::PROPERTY_TYPE_DATE:
                     $objWriter->writeAttribute('meta:value-type', 'date');
-                    $dtobj = Date::dateTimeFromTimestamp($propertyValue);
+                    $dtobj = Date::dateTimeFromTimestamp($propertyValue ?? 0);
                     $objWriter->writeRawData($dtobj->format(DATE_W3C));
 
                     break;
diff --git a/tests/PhpSpreadsheetTests/Document/PropertiesTest.php b/tests/PhpSpreadsheetTests/Document/PropertiesTest.php
index 4583e240..c539da09 100644
--- a/tests/PhpSpreadsheetTests/Document/PropertiesTest.php
+++ b/tests/PhpSpreadsheetTests/Document/PropertiesTest.php
@@ -2,6 +2,7 @@
 
 namespace PhpOffice\PhpSpreadsheetTests\Document;
 
+use DateTimeZone;
 use PhpOffice\PhpSpreadsheet\Document\Properties;
 use PhpOffice\PhpSpreadsheet\Shared\Date;
 use PHPUnit\Framework\TestCase;
@@ -163,7 +164,7 @@ class PropertiesTest extends TestCase
         self::assertSame($expectedType, $this->properties->getCustomPropertyType($propertyName));
         $result = $this->properties->getCustomPropertyValue($propertyName);
         if ($expectedType === Properties::PROPERTY_TYPE_DATE) {
-            $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d');
+            $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d', new DateTimeZone('UTC'));
         }
         self::assertSame($expectedValue, $result);
     }
diff --git a/tests/PhpSpreadsheetTests/Reader/Xlsx/PropertiesTest.php b/tests/PhpSpreadsheetTests/Reader/Xlsx/PropertiesTest.php
index 1e2bd841..bb414da5 100644
--- a/tests/PhpSpreadsheetTests/Reader/Xlsx/PropertiesTest.php
+++ b/tests/PhpSpreadsheetTests/Reader/Xlsx/PropertiesTest.php
@@ -2,6 +2,7 @@
 
 namespace PhpOffice\PhpSpreadsheetTests\Reader\Xlsx;
 
+use DateTimeZone;
 use PhpOffice\PhpSpreadsheet\Document\Properties;
 use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
 use PhpOffice\PhpSpreadsheet\Shared\Date;
@@ -44,7 +45,7 @@ class PropertiesTest extends AbstractFunctional
             self::assertSame($testData['type'], $properties->getCustomPropertyType($propertyName));
             $result = $properties->getCustomPropertyValue($propertyName);
             if ($properties->getCustomPropertyType($propertyName) == Properties::PROPERTY_TYPE_DATE) {
-                $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d');
+                $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d', new DateTimeZone('UTC'));
             }
             self::assertSame($testData['value'], $result);
         }
@@ -86,7 +87,7 @@ class PropertiesTest extends AbstractFunctional
             self::assertSame($testData['type'], $properties->getCustomPropertyType($propertyName));
             $result = $properties->getCustomPropertyValue($propertyName);
             if ($properties->getCustomPropertyType($propertyName) == Properties::PROPERTY_TYPE_DATE) {
-                $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d');
+                $result = Date::formattedDateTimeFromTimestamp("$result", 'Y-m-d', new DateTimeZone('UTC'));
             }
             self::assertSame($testData['value'], $result);
         }