diff --git a/src/ChronosTime.php b/src/ChronosTime.php
index 7c928e6..cc7751f 100644
--- a/src/ChronosTime.php
+++ b/src/ChronosTime.php
@@ -172,6 +172,22 @@ public static function noon(): static
         return new static('12:00:00');
     }
 
+    /**
+     * Returns instance set to end of day - either
+     * 23:59:59 or 23:59:59.999999 if `$microseconds` is true
+     *
+     * @param bool $microseconds Whether to set microseconds or not
+     * @return static
+     */
+    public static function endOfDay(bool $microseconds = false): static
+    {
+        if ($microseconds) {
+            return new static('23:59:59.999999');
+        }
+
+        return new static('23:59:59');
+    }
+
     /**
      * Returns clock microseconds.
      *
diff --git a/tests/TestCase/ChronosTimeTest.php b/tests/TestCase/ChronosTimeTest.php
index 68f3e79..92b6786 100644
--- a/tests/TestCase/ChronosTimeTest.php
+++ b/tests/TestCase/ChronosTimeTest.php
@@ -128,6 +128,15 @@ public function testNoon(): void
         $this->assertSame('12:00:00.000000', $t->format('H:i:s.u'));
     }
 
+    public function testEndOfDay(): void
+    {
+        $t = ChronosTime::endOfDay();
+        $this->assertSame('23:59:59.000000', $t->format('H:i:s.u'));
+
+        $t = ChronosTime::endOfDay(microseconds: true);
+        $this->assertSame('23:59:59.999999', $t->format('H:i:s.u'));
+    }
+
     public function testSetters(): void
     {
         $t = ChronosTime::midnight()->setHours(24);