On one level, this is a readable exposition of how Cardano worked and thought as a practicing astrologer, including extensive background on the sophisticated and ancient astrological tradition he came out of, with some glances at how that connected to his practice as a medical doctor and a mathematician (though there's less about the latter than I would have liked).
It says how long ago something was said, so you can tell last month
from 2014 without doing the arithmetic. Full and green is recent; it
drains and cools as the date gets older, and empties completely at about
6 years.
5d5 days ago
8mo8 months ago
2yr2 years ago
4yr4 years ago
9yr9 years ago
A striped bar means the date itself is an estimate — the source did
not carry an exact one. An entry with no date at all gets no bar.