I love everything about this. Shopping for hardware now. If I get it up and running, I'll submit a PR for the US Episcopal calendar.
This is a bigger and more involved project than I think a lot of people will realize. One of my recent side projects was a Mastodon bot that posts a daily verse from the Episcopal Hymnal 1982 (botsin.space/@hymnal1982), and getting it to reflect the liturgical calendar was a job and a half. (It missed all of Christmas after Christmas Day; have to go debug that.)