When transiting Saturn forms a trine to your natal Moon, Saturn, the planet of time and limits, sits 120 degrees from the point in your birth chart that governs your inner weather: what you need to feel safe, and how you react before you think. A trine is the easiest angle in astrology, and that is both the good news and the catch. The support is real, but it comes so softly that many people let it pass without using it.
Saturn takes about twenty-nine and a half years to go round the zodiac, and in each of those cycles it makes this trine to your natal Moon twice: once on the way out from the conjunction, and once on the way back towards the next one. Because Saturn turns retrograde every year, it often crosses the exact degree three times rather than once, and the whole transit can last several months, sometimes close to a year. Spisce opens it when Saturn is within three degrees of exact, so you have a real window to work with.