This is probably too niche, but I figured I’d submit anyway.
Let’s call the ongoing era the Current Era, and the previous era (negative years) the Ancient Era.
My issue is this: the Current Era starts in what in-universe is called year 1:1 or 1:01. Because I can’t stylize it that way, I treat it as year 101 in Aeon Timeline. This means that the previous era (with negative years) is off by a century in my calendar, and so are any date calculations that cross year 1:01.
I would like the ability to customize the current era to start at year 101 instead of year 1, such that Year 1 Ancient Era would be calculated as being 1 year before Year 101 Current Era. Essentially I want to be able to remove years 1-100 from the calendar entirely so that they’re not shown or counted.