Today's planets against your natal positions, with the exact dates the slow ones perfect.
Retrograde passes counted separately · tight transit orbs · historic time zones
Your birth chart is a fixed photograph of the sky. It does not change, ever. The planets, however, keep moving, and when one of them arrives at an angle to a position in that photograph, astrologers call it a transit. That is the whole idea: a moving sky measured against a still one.
The contacts are sorted with the slow planets first, and that ordering is the point of the page. Jupiter, Saturn, Uranus, Neptune and Pluto move so slowly that a single aspect can stay within orb for months or years — those describe a season of life. The Sun, Mercury, Venus and Mars pass through in days, which makes them useful for timing but poor for describing. Reading the fast ones as though they carried the same weight is the most common way to misread a transit list.
A slow planet rarely perfects an aspect once. It reaches the exact angle moving forward, then turns retrograde and reaches it again going backwards, then turns direct and reaches it a third time, often spread across a year. Each pass is listed separately here, with the retrograde one marked, because collapsing them into a single date throws away most of what the transit was.
Where a planet is in the sky right now, measured against where the planets were at your birth. The birth chart never moves; the transiting planets do. When one of them reaches an angle to a natal position, that contact is a transit.
A slow planet passes the aspect going forward, turns retrograde and passes it again backwards, then turns direct and passes it a third time. All three dates are listed, with the retrograde pass marked, because they are three separate perfections of one contact.
Because here an orb stands for time. Pluto covers about a degree and a half in a year, so a wide orb would mark a decade as significant. Two degrees of Saturn is already most of a year — that is quite wide enough.
For transits to the Sun, Moon and planets, no. For transits to the Ascendant and Midheaven, and for the house a transiting planet is crossing, yes. Without a birth time those are left out rather than guessed from a noon chart, because a transit to a Midheaven derived from a guess is not a weaker answer — it is a different chart's answer.
Left out by default. It aspects everything in the chart every single day, so including it buries the slow contacts that actually mark a period under a wall of noise that is stale by tomorrow.
No, and this page will not tell you it does. A transit is a description of a period, not a schedule of events. The dates below are astronomy — the moments the geometry is exact — and what you make of them is a separate question.