diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCCF.py b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCCF.py
--- a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCCF.py
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/TestDataFormatterObjCCF.py
@@ -31,7 +31,7 @@
         # check formatters for common Objective-C types
         expect_strings = [
             '(CFGregorianUnits) cf_greg_units = 1 years, 3 months, 5 days, 12 hours, 5 minutes 7 seconds',
-            '(CFGregorianDate) cf_greg_date = @"4/11/1985 2:0:0"',
+            '(CFGregorianDate) cf_greg_date = @"4/10/1985 18:0:0"',
             '(CFRange) cf_range = location=4 length=4',
             '(NSPoint) ns_point = (x = 4, y = 4)',
             '(NSRange) ns_range = location=4, length=4',
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
--- a/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/data-formatter/data-formatter-objc/main.m
@@ -501,8 +501,8 @@
 	    NSURL *nsurl2 = [NSURL URLWithString:@"page.html" relativeToURL:nsurl];
 	    NSURL *nsurl3 = [NSURL URLWithString:@"?whatever" relativeToURL:nsurl2];
     
-		NSDate *date1 = [NSDate dateWithNaturalLanguageString:@"6pm April 10, 1985"];
-		NSDate *date2 = [NSDate dateWithNaturalLanguageString:@"12am January 1, 2011"];
+		NSDate *date1 = [NSDate dateWithTimeIntervalSince1970:133890*60*60]; // 6pm April 10, 1985 GMT
+		NSDate *date2 = [NSDate dateWithTimeIntervalSince1970:14975*24*60*60]; // 12am January 1, 2011 GMT
 		NSDate *date3 = [NSDate date];
 		NSDate *date4 = [NSDate dateWithTimeIntervalSince1970:24*60*60];
     NSDate *date5 = [NSDate dateWithTimeIntervalSinceReferenceDate: floor([[NSDate date] timeIntervalSinceReferenceDate])];