diff --git a/packages/Ecotone/src/Messaging/Scheduling/Clock.php b/packages/Ecotone/src/Messaging/Scheduling/Clock.php
index 0137c0b6e..9d6588fb6 100644
--- a/packages/Ecotone/src/Messaging/Scheduling/Clock.php
+++ b/packages/Ecotone/src/Messaging/Scheduling/Clock.php
@@ -16,6 +16,9 @@ class Clock implements EcotoneClockInterface
     public function __construct(
         private readonly ?PsrClockInterface $clock = null,
     ) {
+        if (!self::$globalClock) {
+            self::$globalClock = $this->clock ? $this : self::defaultClock();
+        }
     }
 
     public static function set(PsrClockInterface $clock): void
@@ -28,7 +31,12 @@ public static function set(PsrClockInterface $clock): void
      */
     public static function get(): EcotoneClockInterface
     {
-        return self::$globalClock ??= new NativeClock();
+        return self::$globalClock ??= self::defaultClock();
+    }
+
+    public static function resetToNativeClock(): void
+    {
+        self::$globalClock = null;
     }
 
     public function now(): DatePoint
@@ -48,7 +56,12 @@ public function sleep(Duration $duration): void
         if ($clock instanceof SleepInterface) {
             $clock->sleep($duration);
         } else {
-            (new NativeClock())->sleep($duration);
+            self::defaultClock()->sleep($duration);
         }
     }
+
+    private static function defaultClock(): EcotoneClockInterface
+    {
+        return new NativeClock();
+    }
 }
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/CustomNotifier.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/CustomNotifier.php
new file mode 100644
index 000000000..40f145636
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/CustomNotifier.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+/*
+ * licence Apache-2.0
+ */
+class CustomNotifier
+{
+    private array $notifications = [];
+
+    public function notify(string $eventName, $value): void
+    {
+        if (!isset($this->notifications[$eventName])) {
+            $this->notifications[$eventName] = [];
+        }
+
+        $this->notifications[$eventName][] = $value;
+    }
+
+    public function getNotificationsOf(string $eventName): array
+    {
+        return $this->notifications[$eventName] ?? [];
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/NotificationService.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/NotificationService.php
new file mode 100644
index 000000000..d172d5a43
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/NotificationService.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+use Ecotone\Messaging\Attribute\Asynchronous;
+use Ecotone\Messaging\Attribute\Endpoint\Delayed;
+use Ecotone\Modelling\Attribute\EventHandler;
+
+/**
+ * licence Apache-2.0
+ */
+class NotificationService
+{
+    #[Asynchronous('notifications')]
+    #[Delayed(1000 * 60)] // 60 seconds
+    #[EventHandler(endpointId: 'notifyOrderWasPlaced')]
+    public function notify(OrderWasPlaced $event, CustomNotifier $notifier): void
+    {
+        $notifier->notify('placedOrder', $event->orderId);
+    }
+}
\ No newline at end of file
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderService.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderService.php
new file mode 100644
index 000000000..d04b10657
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderService.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+use Ecotone\Modelling\Attribute\CommandHandler;
+use Ecotone\Modelling\EventBus;
+
+/**
+ * licence Apache-2.0
+ */
+final class OrderService
+{
+    #[CommandHandler('order.register')]
+    public function handle(PlaceOrder $command, EventBus $eventBus): void
+    {
+        $eventBus->publish(new OrderWasPlaced($command->orderId));
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderWasPlaced.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderWasPlaced.php
new file mode 100644
index 000000000..b3677d432
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/OrderWasPlaced.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+/**
+ * licence Apache-2.0
+ */
+final class OrderWasPlaced
+{
+    public function __construct(public string $orderId)
+    {
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/PlaceOrder.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/PlaceOrder.php
new file mode 100644
index 000000000..7bca4a2ca
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/PlaceOrder.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+/**
+ * licence Apache-2.0
+ */
+final class PlaceOrder
+{
+    public function __construct(public string $orderId)
+    {
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Fixture/Scheduling/StaticPsrClock.php b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/StaticPsrClock.php
new file mode 100644
index 000000000..7a7f86198
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Fixture/Scheduling/StaticPsrClock.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Fixture\Scheduling;
+
+use DateTimeImmutable;
+use Ecotone\Messaging\Scheduling\Duration;
+use Ecotone\Messaging\Scheduling\SleepInterface;
+use Psr\Clock\ClockInterface;
+
+/**
+ * licence Apache-2.0
+ */
+final class StaticPsrClock implements ClockInterface, SleepInterface
+{
+    private static DateTimeImmutable $now;
+
+    public function __construct(string $now)
+    {
+        self::$now = new DateTimeImmutable($now);
+    }
+
+    public function now(): DateTimeImmutable
+    {
+        return self::$now;
+    }
+
+    public function sleep(Duration $duration): void
+    {
+        self::$now = self::$now->modify("+{$duration->zeroIfNegative()->inMicroseconds()} microseconds");
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Integration/Scheduling/DelayedMessageAgainstGlobalClockTest.php b/packages/Ecotone/tests/Messaging/Integration/Scheduling/DelayedMessageAgainstGlobalClockTest.php
new file mode 100644
index 000000000..f7c78c545
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Integration/Scheduling/DelayedMessageAgainstGlobalClockTest.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Integration\Scheduling;
+
+use Ecotone\Lite\EcotoneLite;
+use Ecotone\Messaging\Channel\SimpleMessageChannelBuilder;
+use Ecotone\Messaging\Scheduling\Clock;
+use Ecotone\Messaging\Scheduling\Duration;
+use Ecotone\Messaging\Scheduling\EcotoneClockInterface;
+use PHPUnit\Framework\TestCase;
+use Test\Ecotone\Messaging\Fixture\Scheduling\CustomNotifier;
+use Test\Ecotone\Messaging\Fixture\Scheduling\NotificationService;
+use Test\Ecotone\Messaging\Fixture\Scheduling\OrderService;
+use Test\Ecotone\Messaging\Fixture\Scheduling\PlaceOrder;
+use Test\Ecotone\Messaging\Fixture\Scheduling\StaticPsrClock;
+
+/**
+ * Class StaticGlobalClockTest
+ * @package Test\Ecotone\Messaging\Unit\Scheduling
+ * @author JB Cagumbay <cagumbay.jb@gmail.com>
+ *
+ * @internal
+ */
+/**
+ * licence Apache-2.0
+ * @internal
+ */
+class DelayedMessageAgainstGlobalClockTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        parent::tearDown();
+        Clock::resetToNativeClock();
+    }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        Clock::resetToNativeClock();
+    }
+
+    public function test_delayed_message_observes_clock_changes()
+    {
+        $ecotoneTestSupport = EcotoneLite::bootstrapFlowTesting(
+            [EcotoneClockInterface::class, OrderService::class, NotificationService::class, CustomNotifier::class],
+            [$clock = new Clock(new StaticPsrClock('2025-08-11 16:00:00')), new OrderService(), new NotificationService(), $notifier = new CustomNotifier()],
+            enableAsynchronousProcessing: [
+                // 1. Turn on Delayable In Memory Pollable Channel
+                SimpleMessageChannelBuilder::createQueueChannel('notifications', true)
+            ]
+        );
+
+        $ecotoneTestSupport->sendCommandWithRoutingKey('order.register', new PlaceOrder('123'));
+
+        $clock->sleep(Duration::minutes(1));
+
+        // 2. Releasing messages awaiting for 60 seconds
+        $ecotoneTestSupport->run('notifications', releaseAwaitingFor: Clock::get()->now());
+
+        $this->assertEquals(
+            1,
+            count($notifier->getNotificationsOf('placedOrder'))
+        );
+    }
+}
diff --git a/packages/Ecotone/tests/Messaging/Unit/Scheduling/SleepableStaticClockTest.php b/packages/Ecotone/tests/Messaging/Unit/Scheduling/SleepableStaticClockTest.php
index c9ab8c3ac..eabb1878d 100644
--- a/packages/Ecotone/tests/Messaging/Unit/Scheduling/SleepableStaticClockTest.php
+++ b/packages/Ecotone/tests/Messaging/Unit/Scheduling/SleepableStaticClockTest.php
@@ -4,12 +4,10 @@
 
 namespace Test\Ecotone\Messaging\Unit\Scheduling;
 
-use DateTimeImmutable;
 use Ecotone\Messaging\Scheduling\Clock;
 use Ecotone\Messaging\Scheduling\Duration;
-use Ecotone\Messaging\Scheduling\SleepInterface;
 use PHPUnit\Framework\TestCase;
-use Psr\Clock\ClockInterface;
+use Test\Ecotone\Messaging\Fixture\Scheduling\StaticPsrClock;
 
 /**
  * Class SleepableStaticClockTest
@@ -26,38 +24,9 @@ class SleepableStaticClockTest extends TestCase
 {
     public function test_when_given_psr_clock_instance_with_sleep_support_it_increase_the_clock()
     {
-        $staticClock = $this->createStaticClock('2025-08-11 16:00:00');
-        $clock = new Clock($staticClock);
+        $clock = new Clock(new StaticPsrClock('2025-08-11 16:00:00'));
         $clock->sleep(Duration::seconds(30));
 
         $this->assertEquals('2025-08-11 16:00:30', $clock->now()->format('Y-m-d H:i:s'));
     }
-
-    /**
-     * @description Create static clock with given date time to mimic external PsrClockInterface implementation
-     * as Ecotone's Clock dependency override.
-     * @param string $currentDateTime
-     * @return ClockInterface
-     */
-    private function createStaticClock(string $currentDateTime): ClockInterface
-    {
-        return new class ($currentDateTime) implements ClockInterface, SleepInterface {
-            private static DateTimeImmutable $now;
-
-            public function __construct(string $now)
-            {
-                self::$now = new DateTimeImmutable($now);
-            }
-
-            public function now(): DateTimeImmutable
-            {
-                return self::$now;
-            }
-
-            public function sleep(Duration $duration): void
-            {
-                self::$now = self::$now->modify("+{$duration->zeroIfNegative()->inMicroseconds()} microseconds");
-            }
-        };
-    }
 }
diff --git a/packages/Ecotone/tests/Messaging/Unit/Scheduling/StaticGlobalClockTest.php b/packages/Ecotone/tests/Messaging/Unit/Scheduling/StaticGlobalClockTest.php
new file mode 100644
index 000000000..b070bd65d
--- /dev/null
+++ b/packages/Ecotone/tests/Messaging/Unit/Scheduling/StaticGlobalClockTest.php
@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Test\Ecotone\Messaging\Unit\Scheduling;
+
+use Ecotone\Messaging\Scheduling\Clock;
+use Ecotone\Messaging\Scheduling\DatePoint;
+use Ecotone\Messaging\Scheduling\NativeClock;
+use PHPUnit\Framework\TestCase;
+use Test\Ecotone\Messaging\Fixture\Scheduling\StaticPsrClock;
+
+/**
+ * Class StaticGlobalClockTest
+ * @package Test\Ecotone\Messaging\Unit\Scheduling
+ * @author JB Cagumbay <cagumbay.jb@gmail.com>
+ *
+ * @internal
+ */
+/**
+ * licence Apache-2.0
+ * @internal
+ */
+class StaticGlobalClockTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        parent::tearDown();
+        Clock::resetToNativeClock();
+    }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+        Clock::resetToNativeClock();
+    }
+
+    public function test_when_clock_is_not_instantiated_returns_default_native_clock()
+    {
+        $now = new DatePoint('now');
+        $globalClock = Clock::get();
+
+        $this->assertInstanceOf(NativeClock::class, $globalClock);
+        $this->assertEquals($now->format('Y-m-d H:i:s'), $globalClock->now()->format('Y-m-d H:i:s'));
+    }
+
+    public function test_when_clock_is_not_instantiated_with_null_internal_clock_returns_default_native_clock()
+    {
+        $now = new DatePoint('now');
+        $clock = new Clock();
+        $globalClock = Clock::get();
+
+        $this->assertInstanceOf(NativeClock::class, $globalClock);
+        $this->assertEquals($now->format('Y-m-d H:i:s'), $globalClock->now()->format('Y-m-d H:i:s'));
+    }
+
+    public function test_when_clock_is_not_instantiated_with_not_null_internal_clock_returns_ecotone_clock()
+    {
+        $clock = new Clock(new StaticPsrClock('2025-08-11 16:00:00'));
+
+        $globalClock = Clock::get();
+
+        $this->assertInstanceOf(Clock::class, $globalClock);
+        $this->assertEquals('2025-08-11 16:00:00', $globalClock->now()->format('Y-m-d H:i:s'));
+    }
+}