Creating a sunrise/sunset calendar in Python

Every time daylight savings time ends I get a little sad... because I don't know when the sun will rise and set anymore.

Years ago as one of my first adventures in Python I wrote a small script to spit out an HTML calendar. It was an ugly little script, in some commented out lines I even had *C:\Program\ Files\ (x86)* blather, and I haven't used Windows for five years now.

Last week I had some free time, and I finally modernized the script and made it less embarrassing.

The new improved script:

• Runs on Python 3.5
• Accepts command line arguments for location, year, and timezone
• Follows the US Naval Observatory's guidelines for computing atmospheric refraction
• Factors in daylight savings time changes for the timezone
• Has been refactored into nice tidy functions (ready for unit testing, but I haven't added any yet)
• Produces decent and static HTML

I don't know if the script works for odd cases like polar regions where the sun doesn't rise or set, but the script is fairly complete.

It's here on Github: https://github.com/danlmarmot/sunrise-sunset-calendar

Example output

And here's an example of the calendar

Check it out!