diff -r 66d0f6ef2a7f Lib/http/server.py
--- a/Lib/http/server.py	Thu Feb 28 18:03:16 2013 +0200
+++ b/Lib/http/server.py	Thu Feb 28 21:39:42 2013 -0500
@@ -87,6 +87,7 @@
 import html
 import email.message
 import email.parser
+import email.utils
 import http.client
 import io
 import mimetypes
@@ -538,27 +539,20 @@
         """Return the current date and time formatted for a message header."""
         if timestamp is None:
             timestamp = time.time()
-        year, month, day, hh, mm, ss, wd, y, z = time.gmtime(timestamp)
-        s = "%s, %02d %3s %4d %02d:%02d:%02d GMT" % (
-                self.weekdayname[wd],
-                day, self.monthname[month], year,
-                hh, mm, ss)
+        s = email.utils.formatdate(timestamp, False, True)
         return s
 
     def log_date_time_string(self):
         """Return the current time formatted for logging."""
+        monthname = [None,
+             'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+             'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
         now = time.time()
         year, month, day, hh, mm, ss, x, y, z = time.localtime(now)
         s = "%02d/%3s/%04d %02d:%02d:%02d" % (
-                day, self.monthname[month], year, hh, mm, ss)
+                day, monthname[month], year, hh, mm, ss)
         return s
 
-    weekdayname = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
-
-    monthname = [None,
-                 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
-                 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
-
     def address_string(self):
         """Return the client address."""