Transiting Chiron conjunct your natal Moon is a transit that puts old emotional pain right at the centre of your daily life. Chiron, the asteroid that marks where you carry a deep wound, sits exactly on your Moon, which is the part of the chart that governs what you need to feel safe and how you react before you think. The two act as one thing for the duration of the transit, and what that usually looks like is that feelings you have kept at a distance stop being distant.
This transit happens once in roughly fifty years, because that is how long Chiron takes to go around the zodiac. Most people meet it in their late forties or early fifties, close to the Chiron return, though the exact timing depends on your birth chart. Because Chiron turns retrograde every year, it often crosses the same degree three times, which means the transit can last several months to more than a year rather than arriving and leaving in a day.
Spisce opens this transit when Chiron is within three degrees of your natal Moon, so you will see it in your timeline before the exact hit and for a while after.