The astrological natal chart is split up into 12 sections, just like what a watch's clock face has 12 separate sections according to the hours. Each little pie chart section of this chart represents a specific sector of a person's life. It is said that all facets and aspects of life can be divided into these 12 astrological houses. Everything that is part of a human's life is included within these 12 astrological houses. The zodiac sign that the house is placed in explains to you the archetype through which that specific sector of that human's life will be played. In essence, the 12 zodiac signs are the 12 archetypes through which human beings can express themselves. The 12 houses are the 12 sections of life through which the human being uses this archetype to express themselves.
The planets will all be allocated in different sections within these 12 houses, depending on the individual's date, time, and place of birth. Some houses might have more planets than others, indicating a concentration of energy in one sector of a person's life. Conversely, some houses might be empty, suggesting that not that much energy needs to be applied to the sector of a person's life. The way that these planets are distributed within the natal charts and through these 12 houses is unique for every individual. This gives you an evident map of where the focus of the person's life should be.
To figure out exactly which planets are allocated in which house, you do need a person's accurate birth time. Without the birth time, you can't calculate which houses these planets are in. If you do not have a person's birth time, you will not be reading their astrological houses; you will merely be reading the planets and the signs that they are in as well as the aspects between these planets. If you don't have a birth time, you cannot calculate the rising, which is the ascendant, and the houses that the planets are allocated in. This is why to get a complete full comprehensive understanding of an individual and their natal chart; you must have their birth time. You can still gain insight into their life and personality if you don't have their birth time; you will then just not read the astrological houses and the rising.
The House of Aries
The first house starts at the point of the rising. The first house represents how other people see you. The first house represents what other people see when they see you, so the way you see yourself and how you view yourself is often different from how other people view you. The first house represents that initial image people get when they deal with you. It represents your physical appearance and body, facial features, and the energy you present to people when they engage with you. It's also the energy that you put out into the world. The first impression you give to somebody will be your first house sign and not your sun sign. The first house indicates your overall identity and what you show the world.