Index: lldb/source/Plugins/Language/ObjC/Cocoa.cpp
===================================================================
--- lldb/source/Plugins/Language/ObjC/Cocoa.cpp
+++ lldb/source/Plugins/Language/ObjC/Cocoa.cpp
@@ -818,13 +818,14 @@
   static const ConstString g___NSDate("__NSDate");
   static const ConstString g___NSTaggedDate("__NSTaggedDate");
   static const ConstString g_NSCalendarDate("NSCalendarDate");
+  static const ConstString g_NSConstantDate("NSConstantDate");
 
   if (class_name.IsEmpty())
     return false;
 
   uint64_t info_bits = 0, value_bits = 0;
   if ((class_name == g_NSDate) || (class_name == g___NSDate) ||
-      (class_name == g___NSTaggedDate)) {
+      (class_name == g___NSTaggedDate) || (class_name == g_NSConstantDate)) {
     if (descriptor->GetTaggedPointerInfo(&info_bits, &value_bits)) {
       date_value_bits = ((value_bits << 8) | (info_bits << 4));
       memcpy(&date_value, &date_value_bits, sizeof(date_value_bits));
@@ -850,8 +851,13 @@
   } else
     return false;
 
-  if (date_value == -63114076800) {
-    stream.Printf("0001-12-30 00:00:00 +0000");
+  // FIXME: It seems old dates are not formatted according to NSDate's calendar
+  // so we hardcode distantPast's value so that it looks like LLDB is doing
+  // the right thing.
+  // The relative time in seconds from Cocoa Epoch to [NSDate distantPast].
+  const double RelSecondsFromCocoaEpochToNSDateDistantPast = -63114076800;
+  if (date_value == RelSecondsFromCocoaEpochToNSDateDistantPast) {
+    stream.Printf("0001-01-01 00:00:00 UTC");
     return true;
   }
 
Index: lldb/test/API/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSDate.py
===================================================================
--- lldb/test/API/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSDate.py
+++ lldb/test/API/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCNSDate.py
@@ -58,3 +58,6 @@
             substrs=[
                 '(CFMutableBitVectorRef) mut_bv = ',
                 '1110 0110 1011 0000 1101 1010 1000 1111 0011 0101 1101 0001 00'])
+
+        self.expect_expr("distant_past", result_summary="0001-01-01 00:00:00 UTC")
+        self.expect_expr("distant_future", result_summary="4001-01-01 00:00:00 UTC")
Index: lldb/test/API/functionalities/data-formatter/data-formatter-objc/main.m
===================================================================
--- lldb/test/API/functionalities/data-formatter/data-formatter-objc/main.m
+++ lldb/test/API/functionalities/data-formatter/data-formatter-objc/main.m
@@ -655,6 +655,9 @@
       [NSDate dateWithTimeIntervalSinceReferenceDate:
                   floor([[NSDate date] timeIntervalSinceReferenceDate])];
 
+  NSDate *distant_past = [NSDate distantPast];
+  NSDate *distant_future = [NSDate distantFuture];
+
   CFAbsoluteTime date1_abs = CFDateGetAbsoluteTime(date1);
   CFAbsoluteTime date2_abs = CFDateGetAbsoluteTime(date2);
   CFAbsoluteTime date3_abs = CFDateGetAbsoluteTime(date3);