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Your birth chart

Find your chart ruler

Find the traditional ruler of your rising sign, its placement and the planetary chains in your birth chart.

Use your recorded birth time to calculate the rising sign. An approximate or unknown time leaves the chart ruler unavailable.

Date of birth

Use the local birth date in the modern (Gregorian) calendar, from 1600 to today.

Time of birth

Local birth time. For 2:30 pm, enter 14:30.

If the end is at or before the start, the range ends the next day. Equal times cover a full day.

We check the whole period. The Ascendant and houses are left out.

We check the whole local day and show any possible sign changes. The Ascendant and houses are left out.

Placidus uses your birth time to calculate unequal houses. Whole Sign gives each sign one house. Both need an exact time.

Choose the matching town or city on the next step.

Filter by country (optional)

Your chart is private. Sharing is always your choice.

Follow the rising sign to its planet

The chart ruler is the planetary ruler of the Ascendant sign. Taurus and Libra rising both lead to Venus. The result then shows the sign and house of Venus, where available.

Astrologers use this connection to extend the rising-sign reading. Venus in Gemini adds curiosity and exchange to the interpretation; Venus in Capricorn adds structure and commitment. The house supplies the topic in which those themes are read.

Dispositor chains follow the same rule

A dispositor is the planet that rules another planet's sign. Venus in Gemini leads to Mercury because Mercury rules Gemini. If Mercury is in Taurus, it leads back to Venus: the two planets form a loop called mutual reception by sign.

A chain can also end with a planet in its own sign. Mercury in Gemini leads back to itself. The result traces these connections without treating a final planet or a loop as a personality score.

Which rulership system is used?

We use traditional sign rulership: Mars for Scorpio, Saturn for Aquarius and Jupiter for Pisces. Modern associations with Pluto, Uranus and Neptune are separate.

A chart ruler does not by itself establish a dominant planet or provide a complete personal interpretation.

See the traditional and modern rulership table at Cafe Astrology.

Calculate just your rising sign · Calculation methods and limits