Good question. And there hasn't been a single serious complain about it (at least I think VVK was joking).

I couldn't remember it, couldn't be bothered to look it up, so wrote a program to compute it (try catch dropping 10s of years from 0, dropping years from the limit of that, and then trying to drop 3ms from the limit of that just in case). Of course I could have just gone by days but I couldn't shake the bad habit of a lifetime (rating CPU efficiency as more important than my own).