diff --git a/src/java/davmail/exchange/ExchangeSession.java b/src/java/davmail/exchange/ExchangeSession.java
index 0b0d1dbc..20142772 100644
--- a/src/java/davmail/exchange/ExchangeSession.java
+++ b/src/java/davmail/exchange/ExchangeSession.java
@@ -921,7 +921,7 @@ public abstract class ExchangeSession {
         // check Sent folder for duplicates
         ExchangeSession.MessageList messages = searchMessages(SENT, headerEquals("message-id", mimeMessage.getMessageID()));
         if (!messages.isEmpty()) {
-            LOGGER.debug("Dropping message id "+mimeMessage.getMessageID()+": already sent");
+            LOGGER.debug("Dropping message id " + mimeMessage.getMessageID() + ": already sent");
         } else {
             // Exchange 2007 : skip From: header
             mimeMessage.removeHeader("from");
@@ -2759,7 +2759,14 @@ public abstract class ExchangeSession {
                 String value = property.getValue();
                 if (value != null) {
                     try {
-                        properties.put("bday", ExchangeSession.getExchangeZuluDateFormatMillisecond().format(ExchangeSession.getZuluDateFormat().parse(value)));
+                        SimpleDateFormat parser;
+                        if (value.length() == 10) {
+                            parser = new SimpleDateFormat("yyyy-MM-dd");
+                            parser.setTimeZone(GMT_TIMEZONE);
+                        } else {
+                            parser = ExchangeSession.getZuluDateFormat();
+                        }
+                        properties.put("bday", ExchangeSession.getExchangeZuluDateFormatMillisecond().format(parser.parse(value)));
                     } catch (ParseException e) {
                         LOGGER.warn("Invalid date: " + value);
                     }
diff --git a/src/test/davmail/exchange/TestExchangeSessionContact.java b/src/test/davmail/exchange/TestExchangeSessionContact.java
index 2da8c6d0..7979f1a7 100644
--- a/src/test/davmail/exchange/TestExchangeSessionContact.java
+++ b/src/test/davmail/exchange/TestExchangeSessionContact.java
@@ -406,4 +406,21 @@ public class TestExchangeSessionContact extends AbstractExchangeSessionTestCase
         assertEquals("common & name", contact.get("cn"));
 
     }
+
+    public void testDateValue() throws IOException {
+        ExchangeSession.Contact contact = getCurrentContact();
+
+        VCardWriter vCardWriter = new VCardWriter();
+        vCardWriter.startCard();
+        vCardWriter.appendProperty("BDAY", "2000-01-02");
+        vCardWriter.endCard();
+
+        ExchangeSession.ItemResult result = session.createOrUpdateContact("testcontactfolder", itemName, vCardWriter.toString(), contact.etag, null);
+        assertEquals(200, result.status);
+
+        contact = getCurrentContact();
+
+        assertEquals("20000102T000000Z", contact.get("bday"));
+
+    }
 }