I ran into a strange bug in my application I am building:
When I saved a datetime of 2020-04-09 06:30:00 to the database it would convert to 2020-04-09 13:30:00, 7 hours different. Why?
First, I checked that MySQL, Python, and my Windows environment were all using Pacific time. Yes, they are. Everything shows the same time.
Next, I discovered that MySQL stores times in UTC as it is not timezone aware apparently.
So I switched a settings.py option to:
USE_TZ = False
This turns off timezone aware dates, making MySQL easier to work with.
Solved my bug.