Fixing code style and creating new cases tests.

Author: marcoaacoliveira

lib/internal/Magento/Framework/Stdlib/DateTime/Timezone.php

@@ -347,6 +347,8 @@ public function convertConfigTimeToUtc($date, $format = 'Y-m-d H:i:s')
     }
 
     /**
+     * Append time to DateTime
+     *
      * @param string $date
      * @param boolean $includeTime
      * @param string $timezone

lib/internal/Magento/Framework/Stdlib/Test/Unit/DateTime/TimezoneTest.php

@@ -128,6 +128,18 @@ public function dateIncludeTimeDataProvider(): array
                 true, // include time
                 1495170060 // expected timestamp
             ],
+            'Parse greek d/m/y date without time' => [
+                '30/10/2021', // datetime
+                'el_GR', // locale
+                false, // include time
+                1635552000 // expected timestamp
+            ],
+            'Parse greek d/m/y date with time' => [
+                '30/10/21, 12:00 π.μ.', // datetime
+                'el_GR', // locale
+                true, // include time
+                1635552000 // expected timestamp
+            ],
         ];
     }