What is a birth chart?
A birth chart is the study of the position of the planets in the sky at the time you were born. In other words, it is a photograph, a map of the sky at the time of birth. The natal chart represents the state of the sky at the precise moment of your birth, and according to the place where you were born. (Longitude and latitude of the place of birth.) A very accurate natal chart can be established if you have the exact time of birth and the longitude and latitude of the place of birth. If you don’t have this information, you can still make a natal chart with an approximate time (but to the nearest quarter-hour) or a more approximate place of birth, such as the nearest large city to the birthplace. The ideal scenario is to have the birth certificate of the native where all this information is precise, especially nowadays.
- Example of precise data: Maria, was born on September 27, 1972, in New York City, USA at 3:42 PM.
- Example of acceptable data to establish a natal chart: Maria, born on September 27, 1972, in Manhattan (the nearest big city) between 3:30 and 3:45 PM.
In the past, a birth chart was calculated and drawn by hand. This can take two hours in total! These complex calculations require the possession of the Ephemeris book (which presents day by day the longitudes and declinations of the planets, with the Lunar Nodes, Black Moons which come from NASA planetary calculations) as well as the House Tables (these House Tables include the summer times of several countries as well as the latitudes and longitudes of the major cities of the world).

These calculations require a thorough course in astrology and are made easier with the use of a computer, here, they take barely a minute! If you have astrology software or if you find a site that offers you your free natal chart (there are plenty of them) you just have to indicate your first name (optional), your date of birth, your place, and your time of birth.
You get this kind of sky map (the graphics sometimes vary a little, depending on the sites, software...):

Let’s take the example of Maria, born on September 27, 1972, in New York City, USA at 3:42 PM. On the map, you have to locate this symbol first: ☉ It is the Sun. Once spotted, look at which sign it is, it is your zodiac sign.
In this example, the Sun is in Libra, so the native is the sign of Libra. For this, it is necessary to know the astrological symbols but sometimes by clicking on the symbol of the star, the software indicates how many degrees away from which sign it is. (Here: Sun ☉ at 4°35 in Libra).
Now locate the arrow (AC) on the left of the chart: this represents your ascendant. In the example, the ascendant is at 20 degrees of Capricorn.
Then look at where your Moon is located to find your Moon sign, symbolized by ☽: in which sign is it? In the example, the Moon is at 5°44 of the sign Gemini.
Finally, locate the vertical line whose vertex is a circle or arc, this is your midheaven. Find out in which sign it is located, and you will have information about your destiny in general, but especially your professional destiny. In this example, the midheaven is at 21°28 of the sign Scorpio.
📌 You already have the broad outlines of your natal chart and an idea of how to interpret it. In short, remember the zodiac sign (Sun) + Ascendant + lunar sign (Moon) + possibly midheaven (destiny).
In order to dig deeper, you will have to locate all the planets of the natal chart: after the luminaries (Moon and Sun), you will be able to find Mercury ☿, Venus ♀︎, Mars ♂︎, Jupiter ♃, Saturn ♄, Uranus ♅, Neptune ♆, Pluto ♇ and if you want to dig deeper, you can also find out the position of your Lunar Nodes, Black Moon, Chiron, Vesta, etc. |
Of course, there is much more to develop, and we could write a whole chapter on each star and each planet, but in order not to lose yourself in the explanations, note the basics:
- The Sun and the Ascendant give the first outline of your personality.
- The Moon represents your inner world, your sensitivity, and the way you express this sensitivity, but also the woman you are and the feminine part you have if you are a man.
- Mercury represents your intellect, your way of thinking...
- Venus represents your relationship to love, your way of loving...
- Mars represents your way of acting.
- Jupiter is your luck, your optimistic part, or your excesses...
- Saturn represents the structure, the responsibilities, the discipline, the brakes, the patience...
- Uranus represents your audacity, your notion of freedom, and your originality...
- Neptune represents your ideals, your beliefs, your philosophies of life, your inspiration, imagination but also your misguidance...
- Pluto represents your unconscious, your taboos, your instincts, your fears, your power, your magnetism, and your sexuality...
Once you have located these planets in your birth chart, look at which signs they are in and see the interpretation in the existing texts...
Note that a natal chart is divided into 12 parts: the astrological houses, which each represent a sector of life. So a planet is interpreted as a sign but also in House! In the example chart, Venus, the star of love, is at 21°14 of the sign of Leo in the 7th House. You will therefore interpret Venus in Leo, but also Venus in the 7th house.
But that’s not all! You must also take into account the astrological aspects (e.g.: conjunction, square, opposition, trine, sextile ...) between the planets. Here Venus in Leo and in House 7 is Sextile (thus well-connected) to Saturn in Gemini, which brings emotional stability to Venus in Leo already generous, rather demonstrative, and which has a great need for relational because in house 7.
You have understood that it is not easy to decipher your natal chart, and even less to interpret it. But the few keys that we have just given you will already help you to understand how it works.
This article provides a clear and insightful explanation of birth charts, making astrology easy to understand for beginners. The breakdown of planetary influences and houses is especially helpful for those looking to explore their astrological profile. A great resource for anyone interested in gaining deeper self-awareness through astrology and birth chart analysis.
psychichealersharma, 8 months ago
Hello, Thank you for your comment. So glad you enjoyed reading the article and found it useful. Take care, Yours, Susan ✨
Susan Taylor