diff --git a/src/Countries/Australia.php b/src/Countries/Australia.php
index 0b43bae4e..3de478baa 100644
--- a/src/Countries/Australia.php
+++ b/src/Countries/Australia.php
@@ -30,7 +30,7 @@ protected function allHolidays(int $year): array
     /** @return array<string, CarbonImmutable> */
     protected function variableHolidays(int $year): array
     {
-        $easter = $this->easter($year)->setTimezone('Australia/Sydney');
+        $easter = $this->easter($year);
 
         return [
             'Good Friday' => $easter->subDays(2),
diff --git a/src/Countries/Greece.php b/src/Countries/Greece.php
index 1b206e007..5a0b0a450 100644
--- a/src/Countries/Greece.php
+++ b/src/Countries/Greece.php
@@ -30,7 +30,7 @@ protected function allHolidays(int $year): array
     protected function variableHolidays(int $year): array
     {
         // OrthodoxEaster needs to setTimezone
-        $orthodoxEaster = $this->orthodoxEaster($year)->setTimezone('Europe/Athens');
+        $orthodoxEaster = $this->orthodoxEaster($year);
         $cleanMonday = $orthodoxEaster->copy()->subDays(48);
         $megaliParaskevi = $orthodoxEaster->copy()->subDays(2);
         $megaloSavvato = $orthodoxEaster->copy()->subDays(1);
diff --git a/src/Countries/Japan.php b/src/Countries/Japan.php
index 38b1bc7d5..a15d890c5 100644
--- a/src/Countries/Japan.php
+++ b/src/Countries/Japan.php
@@ -33,17 +33,13 @@ protected function allHolidays(int $year): array
     /** @return array<string, CarbonImmutable> */
     protected function variableHolidays(int $year): array
     {
-        $comingOfAgeDay = (new CarbonImmutable("second monday of january $year")) // Coming of Age Day
-            ->setTimezone('Asia/Tokyo');
+        $comingOfAgeDay = (new CarbonImmutable("second monday of january $year"))->startOfDay();
 
-        $oceansDay = (new CarbonImmutable("third monday of july $year")) // Ocean's Day
-            ->setTimezone('Asia/Tokyo');
+        $oceansDay = (new CarbonImmutable("third monday of july $year"))->startOfDay();
 
-        $respectForTheAgedDay = (new CarbonImmutable("third monday of september $year")) // Respect for the Aged Day
-            ->setTimezone('Asia/Tokyo');
+        $respectForTheAgedDay = (new CarbonImmutable("third monday of september $year"))->startOfDay();
 
-        $sportsDay = (new CarbonImmutable("second monday of october $year")) // Sports Day
-            ->setTimezone('Asia/Tokyo');
+        $sportsDay = (new CarbonImmutable("second monday of october $year"))->startOfDay();
 
         $holidays = [
             '成人の日' => $comingOfAgeDay,
diff --git a/src/Countries/Kenya.php b/src/Countries/Kenya.php
index 82a7ad3d8..86e95b704 100644
--- a/src/Countries/Kenya.php
+++ b/src/Countries/Kenya.php
@@ -28,8 +28,7 @@ protected function allHolidays(int $year): array
     /** @return array<string, CarbonImmutable> */
     protected function variableHolidays(int $year): array
     {
-        $easter = CarbonImmutable::createFromTimestamp(easter_date($year))
-            ->setTimezone('Africa/Nairobi');
+        $easter = $this->easter($year);
 
         return [
             'Good Friday' => $easter->subDays(2),
diff --git a/src/Countries/Montenegro.php b/src/Countries/Montenegro.php
index 2423f1e81..b653d4a4f 100644
--- a/src/Countries/Montenegro.php
+++ b/src/Countries/Montenegro.php
@@ -36,7 +36,7 @@ public function allHolidays(int $year): array
     public function variableHolidays(int $year): array
     {
         // Orthodox Easter calculation needs to be in the same timezone as the country
-        $orthodoxEaster = $this->orthodoxEaster($year)->setTimezone('Europe/Podgorica');
+        $orthodoxEaster = $this->orthodoxEaster($year);
         $goodFriday = $orthodoxEaster->copy()->subDays(2);
         $orthodoxEasterMonday = $orthodoxEaster->copy()->addDay();
 
diff --git a/src/Countries/Vietnam.php b/src/Countries/Vietnam.php
index 76ae6f1b5..7d6504047 100644
--- a/src/Countries/Vietnam.php
+++ b/src/Countries/Vietnam.php
@@ -80,8 +80,7 @@ protected function getTheExtraDayForIndependenceDay(int $year): array
             return [];
         }
 
-        $independenceDay = CarbonImmutable::parse("$year-09-02")
-            ->setTimeZone('Asia/Ho_Chi_Minh');
+        $independenceDay = CarbonImmutable::parse("$year-09-02")->startOfDay();
 
         if ($independenceDay->dayOfWeek === CarbonInterface::MONDAY) {
             return ['Ngày Sau Quốc Khánh' => $independenceDay->addDay()];