diff --git a/src/Countries/Country.php b/src/Countries/Country.php
index 538b89675..fa0352908 100644
--- a/src/Countries/Country.php
+++ b/src/Countries/Country.php
@@ -109,11 +109,11 @@ protected function ensureYearCanBeCalculated(int $year): void
          * https://www.php.net/manual/en/function.easter-date.php
          */
         if ($year < 1970) {
-            throw InvalidYear::yearTooLow();
+            throw InvalidYear::yearTooLow(1970);
         }
 
         if ($year > 2037) {
-            throw InvalidYear::yearTooHigh();
+            throw InvalidYear::yearTooHigh(2038);
         }
     }
 }
diff --git a/src/Countries/Egypt.php b/src/Countries/Egypt.php
index 52ec78672..b220aca86 100644
--- a/src/Countries/Egypt.php
+++ b/src/Countries/Egypt.php
@@ -5,6 +5,7 @@
 use Carbon\CarbonImmutable;
 use Carbon\CarbonInterface;
 use RuntimeException;
+use Spatie\Holidays\Exceptions\InvalidYear;
 
 class Egypt extends Country
 {
@@ -229,28 +230,24 @@ public function countryCode(): string
         return 'eg';
     }
 
-    /**
-     * @return array<string, bool|CarbonImmutable>
-     */
     protected function allHolidays(int $year): array
     {
         $fixedHolidays = $this->fixedHolidays($year);
         $variableHolidays = $this->variableHolidays($year);
 
         return array_merge([
-            // These are fixed, but seasonal holidays that aren't observed in Egypt
-            'New Year\'s Day' => CarbonImmutable::create($year, 1, 1),
-            'Flooding of the Nile' => CarbonImmutable::create($year, 8, 15),
-            'March Equinox' => CarbonImmutable::create($year, 3, 20),
-            'June Solstice' => CarbonImmutable::create($year, 6, 21),
-            'September Equinox' => CarbonImmutable::create($year, 9, 22),
-            'Nayrouz' => CarbonImmutable::create($year, 9, 11),
-            'December Solstice' => CarbonImmutable::create($year, 12, 21),
+            'New Year\'s Day' => '1-1',
+            'Flooding of the Nile' => '8-15',
+            'March Equinox' => '3-20',
+            'June Solstice' => '6-21',
+            'Nayrouz' => '9-11',
+            'September Equinox' => '9-22',
+            'December Solstice' => '12-21',
         ], $fixedHolidays, $variableHolidays);
     }
 
     /**
-     * @return array<string, bool|CarbonImmutable>
+     * @return array<string, CarbonInterface>
      */
     protected function variableHolidays(int $year): array
     {
@@ -277,7 +274,7 @@ protected function variableHolidays(int $year): array
      * @param  int  $year  The year for which to prepare holiday dates.
      * @param  string  $holidayName  The name of the holiday.
      * @param  int  $duration  The duration of the holiday in days.
-     * @return array<string, CarbonImmutable|false> An array of holiday dates.
+     * @return array<string, CarbonImmutable> An array of holiday dates.
      */
     private function getIslamicHolidayDatesForYear(array $holidayDates, int $year, string $holidayName, int $duration = 1): array
     {
@@ -289,22 +286,25 @@ private function getIslamicHolidayDatesForYear(array $holidayDates, int $year, s
          *
          * @see https://www.timeanddate.com/holidays/egypt
          */
-        if (isset($holidayDates[$year])) {
-            $startDay = CarbonImmutable::createFromFormat('Y-m-d', sprintf('%s-%s', $year, $holidayDates[$year]));
 
-            if (! $startDay instanceof CarbonImmutable) {
-                throw new RuntimeException('Date could not be created.');
-            }
+        if ($year < 2005) {
+            throw InvalidYear::yearTooLow(2005);
+        }
+
+        if (! isset($holidayDates[$year])) {
+            return $dates;
+        }
+
+        $startDay = CarbonImmutable::createFromFormat('Y-m-d', sprintf('%s-%s', $year, $holidayDates[$year]));
 
-            if ($duration === 1) {
-                // For single-day holidays, use the holiday name without "Day"
-                $dates[$holidayName] = $startDay;
-            } else {
-                // For multi-day holidays, append "Day N" for the second day onwards
-                for ($i = 0; $i < $duration; $i++) {
-                    $dayLabel = $i === 0 ? $holidayName : sprintf('%s Day %d', $holidayName, $i + 1);
-                    $dates[$dayLabel] = $startDay->addDays($i);
-                }
+        if ($duration === 1) {
+            // For single-day holidays, use the holiday name without "Day"
+            $dates[$holidayName] = $startDay;
+        } else {
+            // For multi-day holidays, append "Day N" for the second day onwards
+            for ($i = 0; $i < $duration; $i++) {
+                $dayLabel = $i === 0 ? $holidayName : sprintf('%s Day %d', $holidayName, $i + 1);
+                $dates[$dayLabel] = $startDay->addDays($i);
             }
         }
 
@@ -312,18 +312,18 @@ private function getIslamicHolidayDatesForYear(array $holidayDates, int $year, s
     }
 
     /**
-     * @return array<string, bool|CarbonImmutable>
+     * @return array<string, CarbonInterface>
      */
     private function fixedHolidays(int $year): array
     {
         $holidays = [
-            'Coptic Christmas Day' => CarbonImmutable::create($year, 1, 7),
-            'Revolution Day 2011' => CarbonImmutable::create($year, 1, 25),
-            'Sinai Liberation Day' => CarbonImmutable::create($year, 4, 25),
-            'Labour Day' => CarbonImmutable::create($year, 5, 1),
-            'June 30 Revolution Day' => CarbonImmutable::create($year, 6, 30),
-            'Revolution Day' => CarbonImmutable::create($year, 7, 23),
-            'Armed Forces Day' => CarbonImmutable::create($year, 10, 6),
+            'Coptic Christmas Day' => CarbonImmutable::createFromDate($year, 1, 7),
+            'Revolution Day 2011' => CarbonImmutable::createFromDate($year, 1, 25),
+            'Sinai Liberation Day' => CarbonImmutable::createFromDate($year, 4, 25),
+            'Labour Day' => CarbonImmutable::createFromDate($year, 5, 1),
+            'June 30 Revolution Day' => CarbonImmutable::createFromDate($year, 6, 30),
+            'Revolution Day' => CarbonImmutable::createFromDate($year, 7, 23),
+            'Armed Forces Day' => CarbonImmutable::createFromDate($year, 10, 6),
             'Spring Festival' => $this->orthodoxEaster($year)->addDay()->toImmutable(),
         ];
 
@@ -335,16 +335,12 @@ private function fixedHolidays(int $year): array
     }
 
     /**
-     * @return array<string, CarbonImmutable>
+     * @return array<string, CarbonInterface>
      */
-    private function adjustForWeekend(string $name, CarbonImmutable|false $date): array
+    private function adjustForWeekend(string $name, CarbonImmutable $date): array
     {
         $adjustedHolidays = [];
 
-        if (! $date instanceof CarbonImmutable) {
-            return [];
-        }
-
         // Explicitly define this logic to avoid timezone confusion on the CarbonInterface::next() method
         if ($date->isFriday() || $date->isSaturday()) {
             // If the holiday falls on a weekend (Friday or Saturday), it is observed on the following Sunday
diff --git a/src/Exceptions/InvalidYear.php b/src/Exceptions/InvalidYear.php
index 0eac2b9e1..13fd335ad 100644
--- a/src/Exceptions/InvalidYear.php
+++ b/src/Exceptions/InvalidYear.php
@@ -6,14 +6,14 @@
 
 class InvalidYear extends RuntimeException
 {
-    public static function yearTooLow(): self
+    public static function yearTooLow(int $year): self
     {
-        return new self('Holidays can only be calculated for years after 1970.');
+        return new self("Holidays can only be calculated for years after {$year}.");
     }
 
-    public static function yearTooHigh(): self
+    public static function yearTooHigh(int $year): self
     {
-        return new self('Holidays can only be calculated for years before 2038.');
+        return new self("Holidays can only be calculated for years before {$year}.");
     }
 
     public static function range(string $country, int $start, int $end): self
diff --git a/tests/Countries/AlbaniaTest.php b/tests/Countries/AlbaniaTest.php
index 1bfb5ba1b..6099e1a77 100644
--- a/tests/Countries/AlbaniaTest.php
+++ b/tests/Countries/AlbaniaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate albanian holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'al')->get();
     expect($holidays)
diff --git a/tests/Countries/AngolaTest.php b/tests/Countries/AngolaTest.php
index ae0e07518..6021f721d 100644
--- a/tests/Countries/AngolaTest.php
+++ b/tests/Countries/AngolaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate angola holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'ao')->get();
 
diff --git a/tests/Countries/ChileTest.php b/tests/Countries/ChileTest.php
index aed6f880f..daf50b0e9 100644
--- a/tests/Countries/ChileTest.php
+++ b/tests/Countries/ChileTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate chile holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'cl')->get();
 
diff --git a/tests/Countries/EgyptTest.php b/tests/Countries/EgyptTest.php
index 842b8b4ef..6579f79c5 100644
--- a/tests/Countries/EgyptTest.php
+++ b/tests/Countries/EgyptTest.php
@@ -3,10 +3,11 @@
 namespace Spatie\Holidays\Tests\Countries;
 
 use Carbon\CarbonImmutable;
+use Spatie\Holidays\Exceptions\InvalidYear;
 use Spatie\Holidays\Holidays;
 
 it('can calculate egyptian holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01', 'Africa/Cairo');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'eg')->get();
 
@@ -16,3 +17,9 @@
 
     expect(formatDates($holidays))->toMatchSnapshot();
 });
+
+it('cannot calculate egyptian holidays before 2005', function () {
+    CarbonImmutable::setTestNow('2024-01-01');
+
+    Holidays::for(country: 'eg', year: 2004)->get();
+})->throws(InvalidYear::class);
diff --git a/tests/Countries/EnglandTest.php b/tests/Countries/EnglandTest.php
index ee3d22e80..0746c50a3 100644
--- a/tests/Countries/EnglandTest.php
+++ b/tests/Countries/EnglandTest.php
@@ -40,7 +40,7 @@
 ]);
 
 it('can calculate welsh holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
@@ -50,7 +50,7 @@
 });
 
 it('returns a substitute day if new years day falls on a weekend', function () {
-    CarbonImmutable::setTestNowAndTimezone('2033-01-01');
+    CarbonImmutable::setTestNow('2033-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
@@ -59,7 +59,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
@@ -68,7 +68,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a saturday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
@@ -77,7 +77,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a sunday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2022-01-01');
+    CarbonImmutable::setTestNow('2022-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
@@ -86,7 +86,7 @@
 });
 
 it('can calculate holidays for 2020', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
diff --git a/tests/Countries/GhanaTest.php b/tests/Countries/GhanaTest.php
index 3a02ed9d3..f8186e756 100644
--- a/tests/Countries/GhanaTest.php
+++ b/tests/Countries/GhanaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate Ghana holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'gh')->get();
 
@@ -18,7 +18,7 @@
 });
 
 it('can calculate Ghana easter based region holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'gh')->get();
 
@@ -30,7 +30,7 @@
 });
 
 it('can calculate Ghana date based regional holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'gh')->get();
 
diff --git a/tests/Countries/JamaicaTest.php b/tests/Countries/JamaicaTest.php
index 1ea7b0237..5b06881f5 100644
--- a/tests/Countries/JamaicaTest.php
+++ b/tests/Countries/JamaicaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate jamaican holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'jm')->get();
 
diff --git a/tests/Countries/KenyaTest.php b/tests/Countries/KenyaTest.php
index 96d17cdf3..c5aef294d 100644
--- a/tests/Countries/KenyaTest.php
+++ b/tests/Countries/KenyaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate kenyan holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'ke')->get();
 
diff --git a/tests/Countries/MoldovaTest.php b/tests/Countries/MoldovaTest.php
index 02ac0db64..86fafa45e 100644
--- a/tests/Countries/MoldovaTest.php
+++ b/tests/Countries/MoldovaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate moldavian holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'md')->get();
 
diff --git a/tests/Countries/MontenegroTest.php b/tests/Countries/MontenegroTest.php
index 9f5078b93..e5450ba3f 100644
--- a/tests/Countries/MontenegroTest.php
+++ b/tests/Countries/MontenegroTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate montenegro holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'me')->get();
 
diff --git a/tests/Countries/NigeriaTest.php b/tests/Countries/NigeriaTest.php
index 8fdb2a32a..d0559a305 100644
--- a/tests/Countries/NigeriaTest.php
+++ b/tests/Countries/NigeriaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate nigerian holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'ng')->get();
 
diff --git a/tests/Countries/NorthernIrelandTest.php b/tests/Countries/NorthernIrelandTest.php
index 11266d3af..1f5dc237c 100644
--- a/tests/Countries/NorthernIrelandTest.php
+++ b/tests/Countries/NorthernIrelandTest.php
@@ -47,7 +47,7 @@
 ]);
 
 it('can calculate northern irish holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2025-01-01');
+    CarbonImmutable::setTestNow('2025-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -57,7 +57,7 @@
 });
 
 it('returns a substitute day if new years day falls on a weekend', function () {
-    CarbonImmutable::setTestNowAndTimezone('2033-01-01');
+    CarbonImmutable::setTestNow('2033-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -66,7 +66,7 @@
 });
 
 it('returns a substitute day for second of january if new years day falls on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -75,7 +75,7 @@
 });
 
 it('can calculate northern irish holidays if christmas is on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -84,7 +84,7 @@
 });
 
 it('can calculate northern irish holidays if christmas is on a saturday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -93,7 +93,7 @@
 });
 
 it('can calculate northern irish holidays if christmas is on a sunday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2022-01-01');
+    CarbonImmutable::setTestNow('2022-01-01');
 
     $holidays = Holidays::for(country: 'gb-nir')->get();
 
@@ -102,7 +102,7 @@
 });
 
 it('can calculate northern irish for 2020', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
diff --git a/tests/Countries/ScotlandTest.php b/tests/Countries/ScotlandTest.php
index f8aa5d926..dc2d9aaad 100644
--- a/tests/Countries/ScotlandTest.php
+++ b/tests/Countries/ScotlandTest.php
@@ -43,7 +43,7 @@
 ]);
 
 it('can calculate scottish holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2025-01-01');
+    CarbonImmutable::setTestNow('2025-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -53,7 +53,7 @@
 });
 
 it('returns a substitute day if new years day falls on a weekend', function () {
-    CarbonImmutable::setTestNowAndTimezone('2033-01-01');
+    CarbonImmutable::setTestNow('2033-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -62,7 +62,7 @@
 });
 
 it('returns a substitute day for second of january if new years day falls on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -71,7 +71,7 @@
 });
 
 it('can calculate scottish holidays if christmas is on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -80,7 +80,7 @@
 });
 
 it('can calculate scottish holidays if christmas is on a saturday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -89,7 +89,7 @@
 });
 
 it('can calculate scottish holidays if christmas is on a sunday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2022-01-01');
+    CarbonImmutable::setTestNow('2022-01-01');
 
     $holidays = Holidays::for(country: 'gb-sct')->get();
 
@@ -98,7 +98,7 @@
 });
 
 it('can calculate holidays for 2020', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-eng')->get();
 
diff --git a/tests/Countries/SloveniaTest.php b/tests/Countries/SloveniaTest.php
index 0dc846a6e..da8a6e011 100644
--- a/tests/Countries/SloveniaTest.php
+++ b/tests/Countries/SloveniaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate slovenian holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'si')->get();
 
diff --git a/tests/Countries/SwitzerlandTest.php b/tests/Countries/SwitzerlandTest.php
index 0e4a97f41..386019210 100644
--- a/tests/Countries/SwitzerlandTest.php
+++ b/tests/Countries/SwitzerlandTest.php
@@ -8,7 +8,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate swiss holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'ch')->get();
 
@@ -20,7 +20,7 @@
 });
 
 it('can get swiss holidays for a specified region (zh)', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $switzerland = new Switzerland(region: 'ch-zh');
 
diff --git a/tests/Countries/TaiwanTest.php b/tests/Countries/TaiwanTest.php
index 75c7b6906..9aa6578bc 100644
--- a/tests/Countries/TaiwanTest.php
+++ b/tests/Countries/TaiwanTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate taiwan holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'tw')->get();
 
diff --git a/tests/Countries/TanzaniaTest.php b/tests/Countries/TanzaniaTest.php
index 69777866b..38f15ec39 100644
--- a/tests/Countries/TanzaniaTest.php
+++ b/tests/Countries/TanzaniaTest.php
@@ -6,7 +6,7 @@
 use Spatie\Holidays\Holidays;
 
 it('can calculate tanzania holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'tz')->get();
 
diff --git a/tests/Countries/WalesTest.php b/tests/Countries/WalesTest.php
index 2e840357b..01d65370e 100644
--- a/tests/Countries/WalesTest.php
+++ b/tests/Countries/WalesTest.php
@@ -58,7 +58,7 @@
 ]);
 
 it('can calculate welsh holidays', function () {
-    CarbonImmutable::setTestNowAndTimezone('2024-01-01');
+    CarbonImmutable::setTestNow('2024-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();
 
@@ -68,7 +68,7 @@
 });
 
 it('returns a substitute day if new years day falls on a weekend', function () {
-    CarbonImmutable::setTestNowAndTimezone('2033-01-01');
+    CarbonImmutable::setTestNow('2033-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();
 
@@ -77,7 +77,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a friday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();
 
@@ -86,7 +86,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a saturday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2021-01-01');
+    CarbonImmutable::setTestNow('2021-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();
 
@@ -95,7 +95,7 @@
 });
 
 it('can calculate welsh holidays if christmas is on a sunday', function () {
-    CarbonImmutable::setTestNowAndTimezone('2022-01-01');
+    CarbonImmutable::setTestNow('2022-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();
 
@@ -104,7 +104,7 @@
 });
 
 it('can calculate holidays for 2020', function () {
-    CarbonImmutable::setTestNowAndTimezone('2020-01-01');
+    CarbonImmutable::setTestNow('2020-01-01');
 
     $holidays = Holidays::for(country: 'gb-cym')->get();