Long time reader of your site and your philosophy with minimalism with webdesign has always resonated with me. I forget how I stumbled upon your website, probably via indie web or something.
Anyway, some suggestions for your script.sh. I am messing around with it with a few changes. Why not use the the following for your time variable.
TIME=$(date +"%T %Z")
Also I would suggest setting a variable for title, description and copyright. That way when downloading or updating the script to a new version, folks can just copy those top variables and they do not have to update their settings again.