diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index b8c579c..e70f0e7 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
     steps:
     - name: Checkout
       uses: actions/checkout@v2
diff --git a/.gitignore b/.gitignore
index 0bf65d1..33acdc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.*
 composer.lock
 phpcs.xml
 phpunit.xml
diff --git a/composer.json b/composer.json
index d30408a..820380b 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
         "mongodb/mongodb": "^1.0"
     },
     "require-dev": {
-        "phpunit/phpunit": ">=6.5",
+        "phpunit/phpunit": "^6.5||^9.6",
         "squizlabs/php_codesniffer": "^3.7"
     },
     "config": {
diff --git a/src/Utilities/UTCDateTimeUtil.php b/src/Utilities/UTCDateTimeUtil.php
index d530b16..97e4bb6 100644
--- a/src/Utilities/UTCDateTimeUtil.php
+++ b/src/Utilities/UTCDateTimeUtil.php
@@ -2,6 +2,7 @@
 
 namespace SubjectivePHP\MongoDB\Utilities;
 
+use DateTimeInterface;
 use MongoDB\BSON\UTCDateTime;
 
 abstract class UTCDateTimeUtil
@@ -25,4 +26,24 @@ final public static function fromSeconds(int $seconds) : UTCDateTime
         $microSeconds = $seconds * 1000;
         return new UTCDateTime($microSeconds);
     }
+
+    /**
+     * @param DateTimeInterface $dateTime The DateTime object from which a UTCDateTime object will be constructed.
+     *
+     * @return UTCDateTime
+     */
+    final public static function fromDateTime(DateTimeInterface $dateTime): UTCDateTime
+    {
+        return self::fromSeconds($dateTime->getTimestamp());
+    }
+
+    /**
+     * @param string $dateTime A date/time string.
+     *
+     * @return UTCDateTime
+     */
+    final public static function fromDateTimeString(string $dateTime): UTCDateTime
+    {
+        return self::fromSeconds(strtotime($dateTime));
+    }
 }
diff --git a/tests/Utilities/UTCDateTimeUtilTest.php b/tests/Utilities/UTCDateTimeUtilTest.php
index f8e6b11..a27c20f 100644
--- a/tests/Utilities/UTCDateTimeUtilTest.php
+++ b/tests/Utilities/UTCDateTimeUtilTest.php
@@ -2,6 +2,7 @@
 
 namespace SubjectivePHPTest\MongoDB\Utilities;
 
+use DateTime;
 use PHPUnit\Framework\TestCase;
 use SubjectivePHP\MongoDB\Utilities\UTCDateTimeUtil;
 
@@ -25,10 +26,32 @@ public function nowReturnsCurrentDateTime()
      * @test
      * @covers ::fromSeconds
      */
-    public function fromSecondsReturnsExcpectedDateTime()
+    public function fromSecondsReturnsExpectedDateTime()
     {
         $expectedTimestamp = time();
         $actual = UTCDateTimeUtil::fromSeconds($expectedTimestamp)->toDateTime()->getTimestamp();
         $this->assertLessThanOrEqual($expectedTimestamp, $actual);
     }
+
+    /**
+     * @test
+     * @covers ::fromDateTime
+     */
+    public function fromDateTimeReturnsExpectedDateTime()
+    {
+        $dateTime = new DateTime();
+        $actual = UTCDateTimeUtil::fromDateTime($dateTime)->toDateTime()->getTimestamp();
+        $this->assertSame($dateTime->getTimestamp(), $actual);
+    }
+
+    /**
+     * @test
+     * @covers ::fromDateTimeString
+     */
+    public function fromDateTimeStringReturnsExpectedDateTime()
+    {
+        $dateTimeString = '2025-04-11 12:00:00';
+        $actual = UTCDateTimeUtil::fromDateTimeString($dateTimeString)->toDateTime()->getTimestamp();
+        $this->assertSame(strtotime($dateTimeString), $actual);
+    }
 }