Stop using utcnow and utcfromtimestamp
If you are the kind of developer who prefers to work in UTC, you may have seen Python's
datetime.utcfromtimestamp()methods and thought, "Ah, yes, this is what I should do to work in UTC!" But alas, this is not the best way to work with UTC datetimes. In fact I would say that it is extremely rare that you would want to use either of these functions.
Source: Stop using utcnow and utcfromtimestamp, an article by Paul Ganssle.