This app was mentioned in 2 comments, with an average of 1.00 upvote
Here's one that is supposed to with Google Calendar:
https://www.reddit.com/r/AndroidTV/comments/5lqb5x/i_have_built_a_rough_draft_calendar_app_for/
In the Play Store:
https://play.google.com/store/apps/details?id=news.androidtv.familycalendar
Source:
Here you go: https://play.google.com/store/apps/details?id=news.androidtv.familycalendar
Very rough. Code's on GitHub too.