Rising sign in the natal chart is called Lagna. It is actually a point in the zodiac, in the eastern horizon at a particular time when one living being or an entity (nation, party, business, association etc) comes into existence in the manifested world.
We can say that it is the time and space equation for an individual/ an entity which governs its entire existence.
Lagna governs the attitude, ideals, outlook, inherent nature of a person and all that which gives him a sense of individuality or identity. Consequently the person behaves or reacts in a certain manner depending up on this internal makeup.
The moment we talk about existence in the material world, an identity or ” I ness” becomes necessary for all to exist individually; this ” I ness” is born from ego (ahamkara).
This “I ness” must have some attributes and a physical body to exist in the manifested world separately as different from others. Lagna is sum total of the entire “I ness” of a native or his complete real personality. It is the physical interface (body) via which a human being comes in contact with the external world and others. Langa Lord is the intelligence of a human being that guides his existence in the manifested world.
There are various kinds of existences for a native depending up on the context we are taking under consideration. Hence there are various types of Lagnas used to judge different aspects.
There is an existence at spiritual level (Atma Karaka as Lagna), one at physical level to physically interact with the external world (normal Rashi Lagna) and one at material level i.e. status, reputation and image in the society (Arudha Lagna). Existence with respect to mind or moon is called Chandra Lagna. There are other important categorizations like existence w.r.t wealth and sustenance (Hora Lagna), existence w.r.t power/authority one commands (Ghatika Lagna), existence w.r.t prosperity, wellbeing and blessings of mother (Shri Lagna) etc.
Lagna is the reference frame for any individual living or non living entity from which all other concerned aspects are judged. The results of all the other houses should be favorable for lagna under consideration. Hence Raj yoga is formed by the lord of quadrants and trines only, because these house are auspicious for Lagna.
Adhana Lagna (Conception): is the situation when the process of creation of a life just begins. It commences the process of coming together of a mind and a soul and formation of a physical body.
Lagna is a trine (representing blessings of goddess Laxmi) as well as a quadrant, (representing efforts i.e. Lord Vishnu) that is why Lagna becomes very auspicious and important.
All the divisional charts (varga chakras) are calculated from the natal chart (janma kundali) only. As in natal chart, Lagna represents a native, so in all divisional charts the Lagna always represents the native in that scenario.
To be Continued.