In answering the question on whether everyone's birth chart will have all 12 zodiac signs in it, the answer is both yes and no. In essence, not all signs will have planets assigned to them, so you will not see all the signs in your birth chart. However, all 12 signs still have an impact on the results of your birth chart, even when no planet is assigned to it, which means that all 12 signs are still in the birth chart.
We have all been accustomed to being assigned one sign out of 12 in the zodiac signs; however, birth charts being more specific, we tend to see more than one sign in them, or even all 12. And it makes you wonder, are all 12 signs of the zodiac in our birth charts. The answer to that would be no . . . and yes.
No it's no in everyone's chart
When making a birth chart based on the person's date, time, and place of birth, each planet is assigned to a zodiac sign, referring to the placement of the planet in the constellation during a person's birth. And as such, it is possible that not all signs will be represented.
In a birth chart, there are 10 planets (Sun is considered a planet in astrology, and Pluto is also still considered a planet). That automatically means that not all 12 zodiac signs will appear in the chart. Sometimes, 2 planets might be found in 1 sign, leading to more zodiac signs that do not appear in a person's chart.
Yes, it is still in everyone's chart
However, it should be noted that even though not all signs have a planet assigned to them, all 12 signs still make an impact in the result of a chart. They may represent energies or qualities in the part of the chart wheel that they are found. So when we think about it, all 12 signs are still in everyone's birth chart.
For example, a planet-less sign could be the sign on the Midheaven, IC, Descendant, or Ascendant. These are four cardinal positions that are key astrological indicators on a person's reaction toward life. Additionally part of a birth chart's analysis of a person is based on finding a pattern in the way the planets are spread out toward all 12 signs of the zodiac. Therefore, the 12 signs are still important when determining a chart pattern that indicates certain traits a person will have the tendency to express.
Everyone is familiar with the 12 zodiac signs, but when it comes to birth charts, it is important to note that there are more indicators to a person's personality than these 12. And in a way, all 12 zodiac signs will always be in your birth chart.