diff -r ab4432daf69f Doc/library/datetime.rst
--- a/Doc/library/datetime.rst	Mon Oct 22 21:50:27 2012 -0700
+++ b/Doc/library/datetime.rst	Tue Oct 23 16:05:38 2012 +0300
@@ -597,6 +597,13 @@
    section :ref:`strftime-strptime-behavior`.
 
 
+.. method:: date.__format__(format)
+
+   Same as ``date.strftime``. This makes it possible to specify an explicit
+   format string when using ``string.format``.
+   See section :ref:`strftime-strptime-behavior`
+
+
 Example of counting days to an event::
 
     >>> import time
@@ -647,6 +654,8 @@
     '11/03/02'
     >>> d.strftime("%A %d. %B %Y")
     'Monday 11. March 2002'
+    >>> '{0:%Y}'.format(d)
+    '2002'
 
 
 .. _datetime-datetime:
@@ -1154,6 +1163,13 @@
    string.  See section :ref:`strftime-strptime-behavior`.
 
 
+.. method:: datetime.__format__(format)
+
+   Same as ``datetime.strftime``. This makes it possible to specify an explicit
+   format string when using ``string.format``.
+   See section :ref:`strftime-strptime-behavior`.
+
+
 Examples of working with datetime objects:
 
 .. doctest::
@@ -1198,6 +1214,8 @@
     >>> # Formatting datetime
     >>> dt.strftime("%A, %d. %B %Y %I:%M%p")
     'Tuesday, 21. November 2006 04:30PM'
+    >>> '{0:%Y}'.format(dt)
+    '2006'
 
 Using datetime with tzinfo:
 
@@ -1385,6 +1403,13 @@
    See section :ref:`strftime-strptime-behavior`.
 
 
+.. method:: time.__format__(format)
+
+   Same as ``time.strftime``. This makes it possible to specify an explicit
+   format string when using ``string.format``.
+   See section :ref:`strftime-strptime-behavior`
+
+
 .. method:: time.utcoffset()
 
    If :attr:`tzinfo` is ``None``, returns ``None``, else returns
@@ -1431,6 +1456,8 @@
     'Europe/Prague'
     >>> t.strftime("%H:%M:%S %Z")
     '12:10:30 Europe/Prague'
+    >>> '{0:%Z}'.format(t)
+    'Europe/Prague'
 
 
 .. _datetime-tzinfo: