Index: Doc/library/datetime.rst
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--- Doc/library/datetime.rst	(revision 62989)
+++ Doc/library/datetime.rst	(working copy)
@@ -925,6 +925,12 @@
    boundary.
 
 
+.. method:: datetime.totimestamp()
+
+   Return timestamp of the datetime as seconds and milliseconds since the epoch.
+   The same as ``time.mktime(self.timetuple()) + (self.microsecond / 1000000.0)``.
+
+
 .. method:: datetime.toordinal()
 
    Return the proleptic Gregorian ordinal of the date.  The same as