I’m currently setting a custom state “current date and time” every second.
I use this for an in-page countdown timer (this thing “expires in X minutes).
I also use conditional formatting for group visibility.
For example: when (thing’s creation date + X seconds - “current date and time) > 0 Group A is visible.
Your plugin greatly simplifies the handling of minutes, hours, days, etc vs using modulo to handle remainders.
Perhaps this is an opportunity to rethink my visibility conditions.