Transits in astrology: how to read a transit chart

A transit is the current position of a planet compared with your birth chart. Your birth chart is a snapshot of one moment and stays the same for life, while the planets keep moving. When one of them forms an aspect to a point in your chart, or passes through one of your houses, astrologers call it a transit. A transit chart, or transit list, shows when that happens and for how long.

TL;DR: Read every transit as four parts: the planet in the sky, the aspect it makes, the birth chart point it touches, and the house it is passing through. Fast planets mark days, slow planets mark the themes of months and years, and because of retrograde motion Jupiter and Saturn can cross the same degree three times. Transits describe the tone of a period, not what will happen.

What is a transit in astrology?

Astrology uses the same planets in two roles. Natal planets are the positions recorded at your birth: say, Sun in Cancer, Neptune in Capricorn, Leo rising. Transiting planets are those same bodies in today's sky. A transit is the relationship between the two, and it comes in two forms:

• An aspect to a natal point. The planet in the sky forms one of the classic angles to a natal planet or angle: 0° (conjunction), 60° (sextile), 90° (square), 120° (trine) or 180° (opposition).
• A pass through a house. The planet moves into one of the twelve houses of your chart, the area of life that house describes, and stays there until it reaches the cusp of the next one.

An aspect counts while the planet is close to the exact angle. That allowed distance is the orb. Numato's calculator uses a 1° orb for transits: a transit window opens when the planet comes within 1° of the exact angle and closes when it moves 1° past it, with the exact day in between. So "transiting Saturn square your Sun" means Saturn in the sky stands 90° from where the Sun was when you were born.

One naming trap: numerology also uses the word "transits" for a completely different system, worked out from the letters of your names rather than from planetary positions. We explain it in our article on numerology transits.

How to read a transit chart, step by step

Every transit is built from the same parts. Read them in order, like a sentence: what, in what way, to what, where and when.

1. The transiting planet: what the period is about. Each planet has its own theme. Jupiter stands for growth and trust, Saturn for duties and limits, Uranus for the need for freedom and change. Tradition describes Saturn transits as periods of sorting things out and building, when effort leads to lasting results.
2. The aspect: the tone of the period. In tradition, a conjunction marks the start of a new cycle and is the strongest transit contact. A sextile is an opening for a small step, a square a moment of decision and effort, a trine a time when things move more easily, though a trine starts nothing on its own, and an opposition the peak of a cycle, when results show and compromise with other people is often needed.
3. The natal point: what is being touched. A transit to the Sun concerns identity and goals, to the Moon emotions and needs, to the Ascendant personal matters and new starts, to the MC career and direction. The house that point occupies in your birth chart narrows the meaning down.
4. The house the planet is passing through: where it shows up. Tradition reads a transit through the 7th house as putting relationships, business partners and contracts in focus; through the 10th, career and visibility. All twelve houses are summed up below under Saturn transits through the houses.
5. Timing: how long, and when it peaks. The length of the window depends on the planet, and the exact days mark when the theme is most visible. Tradition links a retrograde pass with review and corrections, and the final direct pass with the point where stalled matters can move on.

The order of reading matters too. Start with the slow planets, because they describe the main themes: Jupiter and Saturn for months, Uranus, Neptune and Pluto for years. Then look at the Sun, Mercury, Venus and Mars, which mark the days when those themes come to the front. Moon transits describe the mood of a day, not a period.

How long does a transit last?

As long as the planet takes to cross the orb, and the planets move at very different speeds. The table shows transit lengths that Numato's engine calculated for 2026 to 2028 for five sample birth charts, using the same 1° orb as the calculator:

The second column covers the whole transit when retrograde motion brings the planet back over the same degree: from the first entry into the orb to the last exit. The Moon makes about a hundred of these short windows a month, which is why the calculator only includes Moon transits for periods of up to a month.

Why transits repeat: retrograde motion

Seen from Earth, the planets regularly appear to stop against the background stars and move backward through the zodiac for weeks or months. This is retrograde motion, an optical effect of Earth and the planet orbiting the Sun at different speeds. The point where a planet turns around is called a station. Mercury does this three times in 2027; the dates are in our guide to Mercury retrograde.

For transits, the effect is simple. A planet moving backward over a degree it has already crossed makes the same aspect a second time, and a third time once it turns direct again. In 2027, Saturn turns retrograde on August 9, 2027 at 27.9° Aries and turns direct on December 23, 2027 (Eastern Time) at 21.0° Aries. Any chart point at roughly 21° to 28° of Aries, Gemini, Cancer, Leo, Libra, Sagittarius, Capricorn or Aquarius therefore gets three exact Saturn aspects: once direct between May and August 2027, once retrograde between August and December 2027, and once direct again by April 2028.

In the calculator this shows up in one of two ways. If the planet moves more than the orb away from the point between passes, you see several separate windows for the same transit. If a station falls close to the point, the planet stays within the orb and one window has two exact dates. A ℞ next to a date means that pass happens while the planet is retrograde.

Worked example: Saturn transits for a New York chart

Take a fictional person born on July 4, 1995 at 9:20 a.m. in New York. Their Ascendant is at 26.9° Leo and natal Neptune at 24.5° Capricorn, in the 5th house. In 2027 Saturn in Aries trines the Ascendant and squares Neptune. Numato's engine, the same one behind the calculator, returns these windows (dates in Eastern Time):

Both transits have three exact dates, but they look different. Saturn stations retrograde at 27.9° Aries, about 1° past the exact trine to the Ascendant, so it stays within orb all summer and the first two passes share one long window. Neptune sits further from the station, so the square splits into three separate windows. Either way, each transit runs for about nine months, from late spring or early summer 2027 to March 2028.

How would tradition read the trine? The planet is Saturn: duties, limits and what you build over years. The aspect is a trine, a supportive period in which things move more easily, as long as someone makes the first move. The point is the Ascendant, which tradition links with personal matters, the way you come across and new starts. And on April 6, 2027 Saturn crosses into this person's 9th house, the area of travel, study and beliefs. Put together, it describes a period in which taking on responsibility for their own direction comes more naturally, with study, travel or questions of belief as the setting. That is a description of the background, not a forecast of any event.

Saturn transits through the houses

Questions such as "Saturn transiting the 8th house" or "Saturn in the 12th house by transit" share one answer: combine what Saturn stands for with the matters of the house. Saturn stands for duties, limits and patience, so tradition reads the area of life it passes through as needing more attention, structure and decisions, and as the place where effort leaves a lasting result.

Saturn spends about 2.5 years in each sign on average. In the Placidus system, the calculator's default, houses differ in size, so a pass through one house can be shorter or longer. For the New York chart above, the 8th house spans 27.9° and the 9th 33.0°. Saturn entered the 8th house on February 19, 2025, crosses into the 9th on April 6, 2027 and stays there until it reaches the MC (Taurus 20.5°): first on June 22, 2029, back on November 26, 2029, and for good on March 12, 2030.

Here is how tradition sums up what a Saturn transit puts in focus in each house:

• 1st house: personal matters: how you present yourself, new starts and decisions made for yourself;
• 2nd house: income, spending and what you really value;
• 3rd house: conversations, learning, commuting and siblings;
• 4th house: home, family, moving house and a sense of support;
• 5th house: creativity, dating, children and time for enjoyment;
• 6th house: daily work, duties and routines;
• 7th house: relationships, business partners and contracts;
• 8th house: shared money, trust in close relationships and matters that need closing;
• 9th house: study, travel, matters abroad and beliefs;
• 10th house: career, work decisions and visibility;
• 11th house: friendships, groups and plans for the future;
• 12th house: time alone, wrapping things up and preparing for the fresh start tradition links with the transit through the 1st house.

That is the short version. Each house is covered in full in our guide to houses in astrology. Saturn's own 29.5-year cycle, and the moment it comes back to its birth position, are explained in our article on the Saturn return. House transits need a birth time: without it, the calculator works out neither houses nor the Ascendant.

Where the slow planets are now (2026–2027)

As of November 2026, with dates from Numato's engine in US Eastern Time (a few fall a day later in the UK):

The key turning points of 2027: Jupiter turns direct on April 12 at 17.0° Leo, Saturn is retrograde from August 9 to December 23 (between 27.9° and 21.0° Aries), Neptune from July 9 to December 15, and Pluto from May 8 to October 17, while Uranus turns direct on February 8 and retrograde again on September 15. Over 2027 Saturn moves roughly between 8° and 28° Aries. If you have a planet or angle in that stretch of Aries, Cancer, Libra or Capricorn, Saturn conjoins, squares or opposes it; in the same stretch of Gemini, Leo, Sagittarius or Aquarius, it makes a sextile or a trine.

Saturn and Neptune in Aries, Uranus in Gemini and Pluto in Aquarius are in those signs for everyone, so the sign alone says little about any one person. The personal meaning comes from the aspects to your chart points and the house the planet is passing through.

What transits can't tell you

We calculate planetary positions astronomically, from NASA JPL ephemeris data (DE440). What transits mean comes from astrological tradition, explained here in plain language, and that tradition has limits:

• They don't tell you what will happen. A transit describes the background and tendencies of a period, not events, other people's decisions or how things turn out.
• A hard aspect isn't a verdict. A Saturn square or opposition describes a time of effort and decisions, not a punishment or a failure. Tradition reads a Jupiter trine as a favorable time, but it gets nothing done by itself.
• The same transit means different things in different charts. Saturn in Aries is there for everyone, but it lands in a different house and touches different points for each person.
• Without a birth time the picture is incomplete. The calculator still shows aspects to the planets, but leaves out the Ascendant, the MC and house transits.
• They don't replace decisions based on facts. On money, contracts or work, facts and qualified advice should decide, not the date of a transit.

How to see your transits in the calculator

1. Open the transit chart calculator and enter your date, time and place of birth.
2. Under "Transits from", keep today's date or pick another, and under "For how long" choose a month, 3 months, half a year or a year. For periods longer than a month the results leave out Moon transits.
3. The results are a "Transits" list grouped by month. Each row reads "Transit: Saturn — Trine — Natal: Ascendant", with the "Within orb" dates and the exact days underneath; ℞ marks a pass made while the planet is retrograde.
4. The 1° transit orb is listed under "Show calculation methods" above the results, and you can switch the zodiac in the settings.
5. The transit list doesn't show house ingresses separately. Compare the planet's sign and degree with the cusps in the "Houses" tab of the birth chart calculator.

Without an exact birth time, the calculator leaves out transits to the Ascendant and MC and says so above the list.

Frequently asked questions

How do I see my transits for today?

Enter your birth details in the transit calculator and keep the default period: one month starting today. You'll see the aspects in orb today and those starting over the next few weeks, and you can expand the Moon transits with the button below the list. Read today's transits from the slow planets down: they show the theme of the period, while the Moon and the fast planets show which days bring it to the front.

What does Saturn transiting the 8th house mean?

Tradition links the 8th house with shared money, trust in close relationships and matters that need closing, and Saturn with duties and structure. Saturn here is read as a time to put shared commitments in order and to be clear about trust. With Virgo rising, Aries is your 8th sign, so in whole sign houses Saturn is in your 8th house from February 2026 to April 2028; in Placidus, check where your 8th house cusp falls.

How long does a Saturn transit last?

One pass through the 1° orb lasts about 2.5 to 5 weeks. When retrograde motion brings Saturn back over the same degree, the whole transit, from the first entry into the orb to the last exit, can stretch to about nine or ten months, like the New York example above. A Saturn transit through a whole house lasts about 2.5 years on average, longer for wide houses and shorter for narrow ones.

Do I need my birth time to see transits?

Not for everything. Aspects to the Sun, Mercury, Venus, Mars and the slow planets only need your date and place of birth. Without a time, the calculator leaves out the Ascendant, the MC and the houses, and notes on each transit that it depends on the exact time. For the Sun and planets that means about 1° or less, but the Moon moves over 10° a day: in the New York example, from 21.4° Virgo to 4.4° Libra. Natal Moon transits are then only approximate.

What's the difference between transits and a solar return?

Transits are a continuous timeline: they show when the planets in the sky aspect your birth chart, week by week. A solar return is a single chart for the moment the Sun comes back to its birth position, read for the year from one birthday to the next. Astrologers often use both: the solar return sets the theme of the year and transits point to the moments within it. See our guide to the solar return chart.

This content is for educational purposes and supports self-reflection; it does not replace professional advice.