Would be great if it was possible to input custom dates further back (currently only able to get to 1900 or 1500 for editing timeline of when an item was published).
I have previously alluded to this request in a previous feature request (linked below). But to reiterate this point; if we could get it down to a year of 1AD that's a start and gives us 2021 years worth of possibilities, before in the future scratch our heads as to how we may address BC dates.
As mentioned on the other thread, should be able to support minimum 1AD when we tackle some work around partial date support. We will aim for more, but 1AD is what we can be sure to do