diff --git a/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/MonthTest.java b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/MonthTest.java
new file mode 100644
index 0000000..6b2692b
--- /dev/null
+++ b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/MonthTest.java
@@ -0,0 +1,88 @@
+// Copyright (c) 2021, the R8 project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+package com.android.tools.r8.desugar.desugaredlibrary;
+
+import com.android.tools.r8.TestParameters;
+import com.android.tools.r8.TestParametersCollection;
+import com.android.tools.r8.TestRuntime;
+import com.android.tools.r8.utils.StringUtils;
+import java.time.Month;
+import java.time.format.TextStyle;
+import java.util.Locale;
+import org.junit.Assume;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+@RunWith(Parameterized.class)
+public class MonthTest extends DesugaredLibraryTestBase {
+  private final TestParameters parameters;
+
+  private static final String EXPECTED_JAVA_8_OUTPUT = StringUtils.lines("4");
+  private static final String EXPECTED_JAVA_9_OUTPUT = StringUtils.lines("April");
+
+  @Parameterized.Parameters(name = "{0}")
+  public static TestParametersCollection data() {
+    return getTestParameters().withAllRuntimes().withAllApiLevels().build();
+  }
+
+  public MonthTest(TestParameters parameters) {
+    this.parameters = parameters;
+  }
+
+  private String getExpectedResult(TestParameters parameters) {
+    if (parameters.isCfRuntime()) {
+      if (parameters.getRuntime().asCf().isNewerThan(TestRuntime.CfVm.JDK8)) {
+        return EXPECTED_JAVA_9_OUTPUT;
+      }
+      return EXPECTED_JAVA_8_OUTPUT;
+    }
+    assert parameters.isDexRuntime();
+    // Assumes java.time is desugared only if any library desugaring is required, i.e., on 26.
+    if (requiresAnyCoreLibDesugaring(parameters)) {
+      return EXPECTED_JAVA_8_OUTPUT;
+    }
+    return EXPECTED_JAVA_9_OUTPUT;
+  }
+
+  @Test
+  public void testMonthD8() throws Exception {
+    if (parameters.isCfRuntime()) {
+      testForJvm()
+          .addInnerClasses(MonthTest.class)
+          .run(parameters.getRuntime(), MonthTest.Main.class)
+          .assertSuccessWithOutput(getExpectedResult(parameters));
+      return;
+    }
+    testForD8(parameters.getBackend())
+        .addInnerClasses(MonthTest.class)
+        .setMinApi(parameters.getApiLevel())
+        .enableCoreLibraryDesugaring(parameters.getApiLevel())
+        .compile()
+        .addDesugaredCoreLibraryRunClassPath(this::buildDesugaredLibrary, parameters.getApiLevel())
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutput(getExpectedResult(parameters));
+  }
+
+  @Test
+  public void testMonthR8() throws Exception {
+    Assume.assumeTrue(parameters.isDexRuntime());
+    testForR8(parameters.getBackend())
+        .addInnerClasses(MonthTest.class)
+        .addKeepMainRule(MonthTest.Main.class)
+        .setMinApi(parameters.getApiLevel())
+        .enableCoreLibraryDesugaring(parameters.getApiLevel())
+        .compile()
+        .addDesugaredCoreLibraryRunClassPath(this::buildDesugaredLibrary, parameters.getApiLevel())
+        .run(parameters.getRuntime(), Main.class)
+        .assertSuccessWithOutput(getExpectedResult(parameters));
+  }
+
+  static class Main {
+    public static void main(String[] args) {
+      System.out.println(Month.APRIL.getDisplayName(TextStyle.FULL_STANDALONE, Locale.UK));
+    }
+  }
+}