--- a/python/moving.py	Tue Jun 28 15:55:56 2016 -0400
+++ b/python/moving.py	Tue Jun 28 17:18:45 2016 -0400
@@ -98,10 +98,11 @@
     '''Temporal interval: set of instants at fixed time step, between first and last, included
     
     For example: based on frame numbers (hence the modified length method)
-    It may be modified directly by setting first and last'''
+    It may be modified directly by setting first and last
+    It also (mostly) works with datetime.datetime'''
 
-    def __init__(self, first=0, last=-1):
-        super(TimeInterval, self).__init__(first, last, False)
+    def __init__(self, first=0, last=-1, revert = False):
+        super(TimeInterval, self).__init__(first, last, revert)
 
     @staticmethod
     def fromInterval(inter):