Transit Chart Calculator
Enter your birth details and a date to see which natal houses the planets cross that day and the aspects they make to your birth chart. The calculation runs in your browser and nothing you enter is sent anywhere.
Not listed? Pick the nearest large city. A few dozen kilometres rarely changes the result.
Change the date to look at the sky on another day.
Enter your birth details to see how the planets on the chosen date relate to your birth chart.
Place data: GeoNames (CC BY 4.0).
See a worked transit example
Fictional example: how to read an aspect and a house
These are made-up birth details, not your chart. Opening this example does not fill in the calculator or start a personal reading.
- Example birth details
- 15 July 1990, 12:00 local time, Istanbul (41.01° N, 28.98° E)
- Transit date
- 27 September 2026, 12:00 UTC
Uranus trine natal Ascendant
A trine is a 120° aspect. Here the orb, the distance from an exact trine, is only 0.1°.
Saturn in natal house 7
For these birth details, Saturn falls between the natal seventh and eighth house cusps. This is a position in the chart, not evidence that a life event will occur.
Your own result depends on your birth details and the transit date. Start with the tightest aspects, then use the symbolic themes as questions for reflection.
What is a transit chart?
A transit is a moving planet making contact with a point in your birth chart. A transit chart shows those contacts by placing the planets of a chosen date over your natal houses and planets. Astrology links transits of fast planets (the Moon, Mercury, Venus) with short-lived themes and those of slow planets with longer ones.
How to read the result
Start with the aspect list: a line such as "Transit Saturn square natal Sun" means Saturn on that date forms a 90° angle with the Sun at your birth. The smaller the orb, the more exact the aspect. Then look at the natal house the transiting planet passes through; in astrology the house describes the area of life where the theme shows up. Positions were checked against the Swiss Ephemeris used by professional software and agree to within a hundredth of a degree.
Frequently asked questions
What is the difference between a transit chart and a birth chart?
Your birth chart is the sky at the moment you were born and never changes. A transit chart lays the sky of another date over it: which natal houses the planets cross that day, and which aspects they make to the planets in your birth chart.
Which aspects and orbs are used?
The five major aspects: conjunction, opposition, square, trine and sextile. Transits are read tightly, so the orb is limited to 2° and only aspects active on that date are listed, tightest first.
Do transits tell me what will happen?
No. Astrology associates each transit with themes; this page shows those themes and a question to reflect on. It does not say that an event occurs, or when.
Why does the Moon change so quickly?
The Moon moves about 13° a day and spends around two and a half days in each sign, so Moon transits change within hours. Transits of slow planets such as Saturn, Uranus, Neptune and Pluto last months or even years.