Index: Doc/includes/tzinfo-examples.py
===================================================================
--- Doc/includes/tzinfo-examples.py	(revision 62106)
+++ Doc/includes/tzinfo-examples.py	(working copy)
@@ -87,11 +87,16 @@
         dt += timedelta(days_to_go)
     return dt

-# In the US, DST starts at 2am (standard time) on the first Sunday in April.
-DSTSTART = datetime(1, 4, 1, 2)
-# and ends at 2am (DST time; 1am standard time) on the last Sunday of Oct.
-# which is the first Sunday on or after Oct 25.
-DSTEND = datetime(1, 10, 25, 1)
+# In the US, DST starts at 2am (standard time) on the second Sunday in March,
+# which is the first Sunday on or after Mar 8.
+DSTSTART = datetime(1, 3, 8, 2)
+# and ends at 2am (DST time; 1am standard time) on the first Sunday of Nov.
+DSTEND = datetime(1, 11, 1, 1)
+# Before 2007, DST used to start at 2am (standard time) on the first Sunday
+# in April and to end at 2am (DST time; 1am standard time) on the last Sunday
+# of October, which is the first Sunday on or after Oct 25.
+DSTSTARTOLD = datetime(1, 4, 1, 2)
+DSTENDOLD = datetime(1, 10, 25, 1)

 class USTimeZone(tzinfo):

@@ -122,7 +127,10 @@
             return ZERO
         assert dt.tzinfo is self

-        # Find first Sunday in April & the last in October.
+        # Find second Sunday in March & the first in November if the year
+        # is higher than 2007, first in April and last in October otherwise.
+        if dt.year < 2007:
+            DSTSTART, DSTEND = DSTSTARTOLD, DSTENDOLD
         start = first_sunday_on_or_after(DSTSTART.replace(year=dt.year))
         end = first_sunday_on_or_after(DSTEND.replace(year=dt.year))