Anyway I thought about adding a display and/or buttons to my controller but ultimately I didn't see the relatively minor value being worth the added complexity. I'm very much a minimalist. You shouldn't have to set the clock very often at all--that's largely the point of the RTC--and tweaking something is a 2 minute job with a laptop.
I like the minimalist approach as well...... but it seems that I'm addicted to solder fumes! LOL
I can hardly wait to build another batch of controllers that run your code.