Update text for newest US DST regulation. The sample file already has the calculation right.
diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index 44c1cde..16429de 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1457,8 +1457,8 @@
Note that there are unavoidable subtleties twice per year in a :class:`tzinfo`
subclass accounting for both standard and daylight time, at the DST transition
points. For concreteness, consider US Eastern (UTC -0500), where EDT begins the
-minute after 1:59 (EST) on the first Sunday in April, and ends the minute after
-1:59 (EDT) on the last Sunday in October::
+minute after 1:59 (EST) on the second Sunday in March, and ends the minute after
+1:59 (EDT) on the first Sunday in November::
UTC 3:MM 4:MM 5:MM 6:MM 7:MM 8:MM
EST 22:MM 23:MM 0:MM 1:MM 2:MM 3:MM