diff --git a/src/scratchpad/testcases/org/apache/poi/hmef/TestAttachments.java b/src/scratchpad/testcases/org/apache/poi/hmef/TestAttachments.java
index 0e89f46a1..79582b1f0 100644
--- a/src/scratchpad/testcases/org/apache/poi/hmef/TestAttachments.java
+++ b/src/scratchpad/testcases/org/apache/poi/hmef/TestAttachments.java
@@ -21,6 +21,7 @@ import java.io.IOException;
 import java.text.DateFormat;
 import java.util.List;
 import java.util.Locale;
+import java.util.TimeZone;
 
 import junit.framework.TestCase;
 
@@ -87,18 +88,18 @@ public final class TestAttachments extends TestCase {
    public void testAttachmentDetails() throws Exception {
       List<Attachment> attachments = quick.getAttachments();
       
-      // Pick a predictable date format
-      // Note that the 28th April is in summer time in the UK
+      // Pick a predictable date format + timezone
       DateFormat fmt = DateFormat.getDateTimeInstance(
             DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.UK
       );
+      fmt.setTimeZone(TimeZone.getTimeZone("UTC"));
       
       // They should all have the same date on them
-      assertEquals("28-Apr-2010 13:40:56", fmt.format( attachments.get(0).getModifiedDate()));
-      assertEquals("28-Apr-2010 13:40:56", fmt.format( attachments.get(1).getModifiedDate()));
-      assertEquals("28-Apr-2010 13:40:56", fmt.format( attachments.get(2).getModifiedDate()));
-      assertEquals("28-Apr-2010 13:40:56", fmt.format( attachments.get(3).getModifiedDate()));
-      assertEquals("28-Apr-2010 13:40:56", fmt.format( attachments.get(4).getModifiedDate()));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format( attachments.get(0).getModifiedDate()));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format( attachments.get(1).getModifiedDate()));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format( attachments.get(2).getModifiedDate()));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format( attachments.get(3).getModifiedDate()));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format( attachments.get(4).getModifiedDate()));
       
       // They should all have a 3512 byte metafile rendered version
       assertEquals(3512, attachments.get(0).getRenderedMetaFile().length);
diff --git a/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestMAPIAttributes.java b/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestMAPIAttributes.java
index 60655a4dd..ca8b41fee 100644
--- a/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestMAPIAttributes.java
+++ b/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestMAPIAttributes.java
@@ -20,6 +20,7 @@ package org.apache.poi.hmef.attribute;
 import java.io.ByteArrayInputStream;
 import java.text.DateFormat;
 import java.util.Locale;
+import java.util.TimeZone;
 
 import junit.framework.TestCase;
 
@@ -151,6 +152,7 @@ public final class TestMAPIAttributes extends TestCase {
       DateFormat fmt = DateFormat.getDateTimeInstance(
             DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.UK
       );
+      fmt.setTimeZone(TimeZone.getTimeZone("UTC"));
       assertEquals("15-Dec-2010 14:46:31", fmt.format(date.getDate()));
       
       // RTF
diff --git a/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestTNEFAttributes.java b/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestTNEFAttributes.java
index f7883dfed..fcea77f02 100644
--- a/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestTNEFAttributes.java
+++ b/src/scratchpad/testcases/org/apache/poi/hmef/attribute/TestTNEFAttributes.java
@@ -20,6 +20,7 @@ package org.apache.poi.hmef.attribute;
 import java.io.ByteArrayInputStream;
 import java.text.DateFormat;
 import java.util.Locale;
+import java.util.TimeZone;
 
 import junit.framework.TestCase;
 
@@ -156,12 +157,13 @@ public final class TestTNEFAttributes extends TestCase {
       assertEquals(3, LittleEndian.getUShort(attr.getData(), 12)); // Weds
       
       // Ask for it as a Java date, and have it converted
-      // Pick a predictable format + location. Note location is in summer time!
+      // Pick a predictable format + location + timezone
       TNEFDateAttribute date = (TNEFDateAttribute)attr;
       DateFormat fmt = DateFormat.getDateTimeInstance(
             DateFormat.MEDIUM, DateFormat.MEDIUM, Locale.UK
       );
-      assertEquals("28-Apr-2010 13:40:56", fmt.format(date.getDate()));
+      fmt.setTimeZone(TimeZone.getTimeZone("UTC"));
+      assertEquals("28-Apr-2010 12:40:56", fmt.format(date.getDate()));
 	}
 	
 	/**