This page is written for two kinds of reader. The first is the newcomer who is honestly curious about Vedic astrology and wants to understand what the map is actually doing. The second is the practising jyotiṣī who wants to know precisely which Parāśarī principles are, and are not, built into the engine. We have tried to be useful and honest to both.
Vedic astrology, Jyotiṣa or "the science of light", is one of the oldest continuously practised astrological traditions in the world. Its mainstream form is called Parāśarī, after the sage Maharṣi Parāśara, whose Bṛhat Parāśara Horā Śāstra (BPHS) is its foundational text. The work is presented as a dialogue between Parāśara and his student Maitreya.
Its exact age is debated. A "Parāśara Horā" is referenced as early as Varāhamihira's writings in the 6th century CE, and scholars generally place the material somewhere between roughly 200 BCE and 600 CE, with parts likely older still. Whatever the precise date, the Parāśarī system became the backbone of mainstream jyotiṣa: planets (grahas), signs (rāśis), houses, lunar mansions (nakṣatras), planetary periods (daśās), and the web of dignities, aspects, and relationships between planets. It is the tradition this app draws from.
Here is what makes Western and Vedic strange bedfellows. Jyotiṣa is far older than Western astrology in its current form, yet the technique of drawing planetary lines across a world map is a modern Western invention. Astrocartography was developed in the 1970s by the American astrologer Jim Lewis, who branded it Astro·Carto·Graphy and posted hand-drawn maps to clients. The idea is simple: mark every place on Earth where a planet was angular, that is rising, setting, culminating, or at the lowest point, at the exact moment of your birth, because those are the places where that planet's influence is considered strongest.
Classical jyotiṣa never produced this map form. So Jyotish Map does something slightly unusual: it borrows the Western astrocartographic skeleton, the lines and the four angles, and grafts a Vedic body onto it. The geometry is Western in origin; the planets included, the zodiac, the labels, the interpretation, and the place-recommendation logic are Vedic.
Each planet's line is drawn from its real position in the sky (its right ascension and declination). That is a purely astronomical fact, independent of which zodiac you use, so a planet's line falls on the same place on Earth whether you read the chart as Western or Vedic. The four lines are the four angles of the chart:
the Ascendant (your Lagna, rising in the east), the Descendant (setting in the west), the Midheaven (overhead, the tenth-house theme), and the Nadir (underfoot, the fourth-house theme). Where two planets' lines cross, you get a paran, a blend of their influences.
Three things, and only three, make our version Vedic rather than Western:
The heart of the app is the "Top Places" recommender. Rather than treating every line as equal, it weights each graha by how it actually functions in your chart, then scores cities by how strongly the right lines pass nearby for the goal you choose. A planet's weight is built from several classical layers:
Natural nature. Jupiter, Venus, Mercury and a waxing Moon are natural benefics; the Sun, Mars, Saturn and the nodes lean malefic. This is only the starting point.
Functional nature for your Lagna. This is pure Parāśara, and it often overrides the natural nature. A planet's friendliness depends on which houses it rules from your ascendant. Rulers of the trikoṇa (1, 5, 9) are benefic; rulers of the dusthāna (6, 8, 12) are difficult; a kendra lordship carries its own nuance. A natural malefic that rules a trine can become one of the most helpful planets in the chart.
Dignity, with cancellation. A planet exalted or in its own sign is strengthened; a debilitated planet is weakened. But the engine also checks for Neecha Bhaṅga, the classical cancellation of debilitation: if the debilitated planet's dispositor or its exaltation lord sits in a kendra (from the Lagna or the Moon), or if it is joined to an exalted planet, the debility lifts and the planet can even become strong.
Retrogression and conjunction adjust the weight further, just as they would in a traditional chart reading.
On top of placement, the engine models graha dṛṣṭi, the Vedic system of planetary aspects, which is quite different from Western aspects:
Each goal reads different angles:
A city scores by how closely the relevant lines pass (within an orb of a few hundred kilometres) and how strong those planets are for you. When you choose more than one goal, the app does not simply add the scores together, which would let your single loudest planet dominate everything. Instead it normalizes each goal and blends them, so the result is the region where your chosen energies genuinely converge, not just wherever one strong line happens to run.
For a practitioner, honesty matters more than a long feature list. This engine is a focused slice of Parāśarī logic, not a full reading. It does not currently use:
The weights are a transparent, tunable heuristic in the spirit of Parāśara, not a divine pronouncement. They are meant to point you toward places worth investigating, not to replace a full chart reading or your own discernment. For serious work, always confirm positions in your own ephemeris or in software such as Jagannatha Hora.