Birth chart guide

Your birth chart, explained.

A birth chart is a map of the sky at the exact minute and place you were born. Here's how to read one — and why the time on your birth certificate matters more than you think.

A birth chart wheel in the Velara app

What it is

One moment, frozen in the sky.

Picture the sky at the moment you were born, seen from the place you were born. Every planet was somewhere along the band of the zodiac; one sign was rising on the eastern horizon; the whole sky was divided into twelve houses. A birth chart — also called a natal chart — is that moment drawn as a wheel.

Astrologers read it in three layers: planets (what is acting), signs (how it acts) and houses (where in life it shows up). The angles between planets — the aspects — show how those parts of you get along.

To calculate it you need three things: your date, your place and your time of birth. The time matters because the sky turns: on average a new sign rises over the horizon about every two hours, and the Moon changes sign about every 2.3 days.

The Big Three

The Big Three: Sun, Moon, Rising.

Your Sun sign comes from your birthday. Your Moon and Rising signs need the full date, time and place — and they change far faster.

Sun — your core self and identity. Changes sign about once a month.

Moon — your emotions and inner needs. Changes sign about every 2.3 days.

AC

Rising — how you meet the world. Changes about every two hours on average.

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The planets

Ten voices in one chart.

In astrology the Sun and Moon count as “planets” too. Each one stands for a different part of you; its sign shows its style.

Sun

Identity, vitality and what you are here to become.

Moon

Emotions, instincts and what makes you feel safe.

Mercury

How you think, learn and communicate.

Venus

Love, pleasure, taste and what you value.

Mars

Drive, desire and how you go after things.

Jupiter

Growth, luck, faith and where life expands.

Saturn

Structure, discipline and the lessons that take time.

Uranus

Change, independence and sudden insight.

Neptune

Dreams, imagination and the things you can't pin down.

Pluto

Power, depth and transformation.

The houses

Twelve rooms of a life.

The houses divide your chart into twelve areas of life, starting from your Rising sign. They depend on your exact birth time and place.

1

First house

Self, appearance and first impressions

2

Second house

Money, possessions and self-worth

3

Third house

Communication, siblings, learning and short trips

4

Fourth house

Home, family, roots and private life

5

Fifth house

Creativity, romance, pleasure and children

6

Sixth house

Work, daily routines, health and service

7

Seventh house

Partnerships, marriage and contracts

8

Eighth house

Shared resources, intimacy and transformation

9

Ninth house

Philosophy, higher learning and long journeys

10

Tenth house

Career, reputation and public life

11

Eleventh house

Friends, groups, hopes and community

12

Twelfth house

The subconscious, solitude and what's hidden

Aspects

How your planets talk to each other.

An aspect is a meaningful angle between two planets. These five are the major ones; how much leeway (“orb”) each gets varies by astrologer.

AspectAngleMeaning
Conjunction0°Blending — two planets act as one.
Sextile60°Opportunity — an easy opening, if you take it.
Square90°Tension — friction that pushes you to act.
Trine120°Harmony — talents that flow naturally.
Opposition180°Polarity — learning to balance two sides.

Tropical vs. sidereal

Two zodiacs, one sky.

Western astrology uses the tropical zodiac: 0° Aries is always the March equinox, so the signs stay in step with the seasons. Vedic astrology uses the sidereal zodiac, which lines the signs up with the fixed stars.

The two lined up about 2,000 years ago. Precession has since moved them about 24° apart, which is why many people's sidereal Sun sign is one sign earlier than their tropical one. Velara calculates your natal chart in the tropical zodiac, and its Vedic reading in the sidereal one.

Curious what each sign means? Explore all twelve zodiac signs, or read how Velara calculates your chart.

FAQ

Birth charts, quickly

What do I need to calculate my birth chart?

Your date of birth, the place you were born and, ideally, your exact birth time. The time decides your Rising sign and your houses; your birth certificate or a family record is the best source.

What if I don't know my birth time?

You can still see where every planet was and which sign it was in. What you can't get reliably is the Rising sign and the houses — and if the Moon changed sign that day, your Moon sign may be uncertain too. What to do if you don't know your birth time.

Is a birth chart the same as a horoscope?

Originally, yes — “horoscope” meant the chart itself. Today it usually means a short forecast for a Sun sign. Your birth chart is the personal map those forecasts are a simplified version of.

What's the difference between tropical and sidereal?

The tropical zodiac, used in Western astrology, ties 0° Aries to the March equinox, so the signs follow the seasons. The sidereal zodiac, used in Vedic astrology, aligns the signs with the fixed stars. Because of precession the two now sit about 24° apart, so many people's sidereal Sun sign is one sign earlier.

Get your chart in two minutes.

Velara calculates every planet, house and aspect for the minute you were born — free.

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