Tips on using python's datetime module
http://www.enricozini.org/2009/debian/using-python-datetime/

Python's datetime module is one of those bits of code that tends not to do what one would expect them to do.

Python's datetime module is one of those bits of code that tends not to do what one would expect them to do. I have come to adopt some extra usage guidelines in order to preserve my sanity:

Important timezone brokenness in Python. PHP5's DateTime continues to be my gold standard for timezone wrangling.

Tips on using python's datetime module

Referência/Turismo

Local Time, Weather and Travel Information

Timezones made usable (by @amyhoy and @thomasfuchs)

Amy Hoy & Thomas Fuchs created another beautiful Javascript/HTML5 website that's earned a place on my bookmark bar.

Nice visualization of timezones.

时区查询

A nice way to present international timezones.

Never warp your brain with that time zone math again.