I built this project for a gift for my wife for Mother's Day. I used the code from andydoro (https://github.com/andydoro/NeoPixel-60-Ring-Clock) to make the clock part work.
My additions to this project are to add in a second ring that will show how far out 2 other dates are by filling in the ring. This will update every minute.
I'm not a C expert so feel free to fix issues and make it better!
Metro: https://www.adafruit.com/product/2466
RTC: https://www.adafruit.com/product/3296
RTC Guide: https://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit
NeoPixel Ring: https://www.adafruit.com/product/2874
Ring Guide: https://learn.adafruit.com/neopixel-60-ring-clock