What does the past transits calculator show?
For the year you choose, every exact conjunction, square and opposition from Jupiter, Saturn, Uranus, Neptune and Pluto to your natal Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn and your four angles, with the date of each pass. It names the biggest one first and lists the rest.
Why only Jupiter through Pluto?
The slow planets make a handful of exact contacts a year, each lasting weeks to months, which is what a year-level look can hold. The Sun, Moon, Mercury, Venus and Mars pass every point of your chart every year or faster; they describe weeks, not years.
Which aspects are included?
Conjunctions, squares and oppositions, the aspects astrologers treat as the turning points of a transit. Trines and sextiles are left out on purpose so the list stays readable.
Do I need my birth time?
For the angles, yes. Without a time the calculator still dates every contact to your planets and leaves the Ascendant and Midheaven out.
Can I check the current year or a future one?
The current year is available. For what is coming, the transit chart calculator and the dated year map on this site look forward with the same solver.