diff --git a/core-java/pom.xml b/core-java/pom.xml
index 0f8a665fa1..7920566a1a 100644
--- a/core-java/pom.xml
+++ b/core-java/pom.xml
@@ -192,16 +192,6 @@
             <artifactId>fscontext</artifactId>
             <version>${fscontext.version}</version>
         </dependency>
-        <dependency>
-            <groupId>joda-time</groupId>
-            <artifactId>joda-time</artifactId>
-            <version>${joda-time.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>com.darwinsys</groupId>
-            <artifactId>hirondelle-date4j</artifactId>
-            <version>${hirondelle-date4j.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.codepoetics</groupId>
             <artifactId>protonpack</artifactId>
@@ -434,8 +424,6 @@
         <grep4j.version>1.8.7</grep4j.version>
         <lombok.version>1.16.12</lombok.version>
         <fscontext.version>4.6-b01</fscontext.version>
-        <joda-time.version>2.9.9</joda-time.version>
-        <hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
         <protonpack.version>1.13</protonpack.version>
         <streamex.version>0.6.5</streamex.version>
 
diff --git a/libraries/pom.xml b/libraries/pom.xml
index cf16f0fb79..9bbc0c41d2 100644
--- a/libraries/pom.xml
+++ b/libraries/pom.xml
@@ -498,6 +498,22 @@
             <artifactId>gt-swing</artifactId>
             <version>${geotools.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.darwinsys</groupId>
+            <artifactId>hirondelle-date4j</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>joda-time</groupId>
+            <artifactId>joda-time</artifactId>
+            <version>${joda-time.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.darwinsys</groupId>
+            <artifactId>hirondelle-date4j</artifactId>
+            <version>${hirondelle-date4j.version}</version>
+        </dependency>
     </dependencies>
     <repositories>
         <repository>
@@ -564,5 +580,7 @@
         <streamex.version>0.6.5</streamex.version>
         <vavr.version>0.9.0</vavr.version>
         <geotools.version>15.2</geotools.version>
+        <joda-time.version>2.9.9</joda-time.version>
+        <hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
     </properties>
 </project>
diff --git a/core-java/src/test/java/com/baeldung/DateDiffUnitTest.java b/libraries/src/test/java/com/baeldung/date/DateDiffUnitTest.java
similarity index 99%
rename from core-java/src/test/java/com/baeldung/DateDiffUnitTest.java
rename to libraries/src/test/java/com/baeldung/date/DateDiffUnitTest.java
index 324a0d4587..6046781619 100644
--- a/core-java/src/test/java/com/baeldung/DateDiffUnitTest.java
+++ b/libraries/src/test/java/com/baeldung/date/DateDiffUnitTest.java
@@ -1,4 +1,4 @@
-package com.baeldung;
+package com.baeldung.date;
 
 import org.junit.Test;