I have updated time-4.diff patch for py3k.  Code changes are minimal, mostly due to string to unicode conversion. I have not attempted to fix anything beyond passing supplied unittest, but I did noticed a few missing error return tests.  I was not able to make the final test in test_mktimetz pass because I did not completely understand its logic.

Georg,

I am trying to consolidate and bring to resolution a number to timezone related issues.  Would you like me to take this issue from you or do you want to continue to own it?