Hey Chris,
Working with dates can be a real pain. If you’re going for your own custom calendar inside of a repeating group, check out this thread: [HOW-TO] Create a custom Calendar using repeating group
You’ll need to use a bit of javascript to make it work. I plan on releasing a video series soon that will further explore how one can work with custom calendars using javascript inside of Bubble. Hope this helps!
- Jacob
Need a Bubble Developer? https://tekademy.co