diff --git a/src/PhpSpreadsheet/Calculation/Engineering.php b/src/PhpSpreadsheet/Calculation/Engineering.php
index 5b7fae57..239fae5d 100644
--- a/src/PhpSpreadsheet/Calculation/Engineering.php
+++ b/src/PhpSpreadsheet/Calculation/Engineering.php
@@ -1531,7 +1531,7 @@ class Engineering
         }
         $binX = '';
         foreach (str_split($x) as $char) {
-            $binX .= str_pad(hex2bin($char), 3, '0', STR_PAD_LEFT);
+            $binX .= str_pad(base_convert($char, 16, 2), 3, '0', STR_PAD_LEFT);
         }
         if (strlen($binX) == 40 && $binX[0] == '1') {
             for ($i = 0; $i < 40; $i++) {
diff --git a/src/PhpSpreadsheet/Shared/Date.php b/src/PhpSpreadsheet/Shared/Date.php
index 7ae7ce68..3c1cdeba 100644
--- a/src/PhpSpreadsheet/Shared/Date.php
+++ b/src/PhpSpreadsheet/Shared/Date.php
@@ -137,7 +137,7 @@ class Date
             $hours = round($dateValue * 24);
             $mins = round($dateValue * 1440) - round($hours * 60);
             $secs = round($dateValue * 86400) - round($hours * 3600) - round($mins * 60);
-            $returnValue = (integer) gmmktime($hours , $mins, $secs);
+            $returnValue = (integer) gmmktime($hours, $mins, $secs);
         }
 
         $timezoneAdjustment = ($adjustToTimezone) ?