On Sat, Jan 01, 2005 at 06:18:33AM -0800, Michael Watkins wrote: > PicklingError: Can't pickle: it's not > the same object as sous.pytz.zoneinfo.UTC.UTC It looks like pytz data is not designed to be picked. This is the problem code from pytz: class UCT(StaticTzInfo): '''UCT timezone definition. See datetime.tzinfo for details''' _zone = 'UCT' _utcoffset = timedelta(seconds=0) _tzname = 'UCT' UCT = UCT() You could avoid the exception by renaming the class 'UCT' to something else (e.g. '_UCT'). I think that will not produce the desired behavior however since it looks like 'UCT' is supposed to be a singleton. Neil