Accurate natal chart interpretation depends on the exactness of the time of birth. Even a single second difference in time affects the chart due to the following reasons: house of zodiac revolves by 1 degree every 4 minutes, earth rotates by 15 degrees after 1 hour, and a difference of 2 minutes can result to an erroneous reading, and the incarnation process is dependent on the exact time of birth.
Birth chart is a tool in astrology where the exact location of stars by the time you were born is analyzed. The exact birth time coincides with the first breath of the baby by the time he goes out of the womb. A difference in time can affect the reading because of the following reasons:
House of zodiac revolves by 1 degree every 4 minutes
Horoscope is divided into 12 houses, which are seen on the ecliptic plane of the sun. There position is time and location dependent; therefore, it continuously changes as time passes. Since it revolves by 1 degree every 4 minutes, it is much obvious that a discrepancy of even a single minute will result to inaccurate reading.
Earth rotates by 15 degrees after 1 hour
As the earth rotates in a counter-clockwise direction, which is about 15 degrees every hour, the position of the zodiacs, planets, angles and the like also changes. Therefore, when one uses an estimated time like "noon time" in the natal chart, this would mean someone else' chart reading.
A difference of 2 minutes can result to an erroneous reading
Time plays an essential part of natal chart reading. Since there are 24 hours in a day and 60 minutes in an hour, every second counts because it can create around 1,440 varied horoscopes a day for every person. As the second-hand of the clock moves, a new chart is formed, which makes a natal chart unique for every person.
The incarnation process is dependent on the exact time of birth
Astrologers believe that the first breath of the child represents the exact time when the soul passes from the metaphysical plane to the material plane. Material plane is something that can be seen and described by words and senses. A metaphysical plane is the opposite and has something to do with incarnation, which means flesh embodiment or simply conception. According to thegreenduck.com, an accurate time recording is like a "key" that unlocks the door towards the material plane. If the key does not match the grid, an astrologer can't get inside the door that is directed towards ones beginnings; Therefore, they can't come up with an accurate chart interpretation.