I'll have to check delorean out, I usually use http://crsmithdev.com/arrow/ for python date manipulation. It works a lot like the javascript library moment.
I use arrow for all my time related operations. I tried dolorean once (very quickly) and found out it was missing several elelents I needed (which arrow had). Maybe I did not look closely enough, I will try again and be back if there is interest. Thanks.