Cast your Drekkana (D3), the siblings-and-co-born divisional chart of Vedic astrology, from date, time, and place of birth. The tool computes your D3 Lagna with a birth-time-confidence check, every planet’s D3 sign and house with its BPHS presiding deity, and renders the chart in North or South Indian style. Uses the sidereal Lahiri ayanamsa, the same engine as our Kundli, and the Parashari drekkana scheme.
100% private - the D3 calculation runs entirely in your browser. No birth data sent anywhere.
Supports 1900 onwards for better calculation reliability.
Birth time matters here: your D3 Lagna changes about every 40 minutes on average - faster than the ~2-hour D1 Lagna - so a sizeable time error can shift the whole D3 house framework.
Free Janam Kundli with D1 and D9 charts, planetary positions, Vimshottari Dasha, and Mangal Dosha. Lahiri sidereal.
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astrologyFree Saptamsa (D7) children/progeny chart from birth details. D7 Lagna with a birth-time-confidence check, per-planet placements with BPHS division names, and North/South chart styles.
astrology| Chart / harmonic | D3 (Drekkana), the third divisional chart |
|---|---|
| Division size | 10 deg (three parts per sign) |
| Start-sign rule | Trine: part 1 self, part 2 the 5th, part 3 the 9th (BPHS, Parashari) |
| Presiding deities | Narada, Agastya, Durvasa (same order for every sign) |
| Classically read for | Happiness through co-born (siblings); 3rd-house courage in later tradition |
| D3 Lagna sensitivity | ~40 min of birth time per drekkana, varies by rising sign |
| Same-sign geometry | Part 1 self-maps: one-third of each sign's span, by arithmetic |
| Near-boundary jump | A body crossing a division edge jumps +4 signs (10-deg edge) or +5 (whole-sign edge), not to the neighbour |
| Scheme | Parashari drekkana (Jagannatha/Somanatha/Parivritti not implemented) |
| Inputs | Date, time, and place of birth |
| Engine | Meeus VSOP87 + Lahiri ayanamsa; Rahu/Ketu = mean node (same engine as Kundli) |
| Privacy | 100% client-side; no birth data leaves your browser |
The Drekkana - also spelled Dreshkana - is the third of the sixteen divisional charts (Shodasavarga) described in the Brihat Parashara Hora Shastra. Where the birth chart (D1) maps the whole life, each varga zooms into one domain, and the classical varga-use verse assigns the Drekkana to happiness through co-born: siblings and the wider circle of those born alongside you.
Like every varga, the D3 is a derived chart: it takes each planet’s exact sidereal longitude from the birth chart and re-maps it by finer divisions of 10 deg. Nothing new is observed in the sky; the varga re-reads the same positions at higher resolution, which is why precise birth details matter more here than in the D1.
Each 30-deg sign is divided into three parts of 10 deg. The rule is a trine and it is the same for every sign - there is no odd/even split: the first part maps to the sign itself, the second to the 5th sign from it, and the third to the 9th sign from it. Each varga in the family carries its own rule - the Navamsa keys on movable/fixed/dual, the Dasamsa and Saptamsa fork on odd/even (from the 9th and the 7th), the Hora collapses to just two signs - so the D3 has its own uniform trine convention.
The same BPHS passage names the three drekkanas of every sign after three sages, in this order:
| Part | Degrees in sign | Maps to | Presiding deity |
|---|---|---|---|
| 1 | 0 - 10 deg | The sign itself | Narada |
| 2 | 10 - 20 deg | The 5th sign from it | Agastya |
| 3 | 20 - 30 deg | The 9th sign from it | Durvasa |
Methods note: this tool computes the Parashari drekkana (the 1st/5th/9th trine above). Other drekkana schemes exist - Jagannatha, Somanatha, and Parivritti - and place planets differently; they are out of scope for this version. The deity names are given as the classical text gives them, without added interpretation. The consulted translation prints “Agasthya” and “Durvash”; we use the common spellings Agastya and Durvasa.
The ascendant crosses one drekkana in roughly 40 minutes of clock time on average - slower than the Dasamsa’s ~12 minutes or the Saptamsa’s ~17, but still far faster than the roughly two hours the D1 Lagna spends in a sign. The exact interval varies with rising sign and latitude (oblique ascension), so instead of quoting only the average, this tool computes your chart’s distance to the nearest D3 Lagna boundary in minutes and says so plainly.
Planet placements have their own fragility near a division edge. This tool flags any planet within about 0.3 deg of a drekkana boundary. That 0.3 deg figure is a conservative division-edge proximity heuristic we carry across our varga tools, not a certified accuracy bound and not a birth-time claim - it simply marks placements close enough to an edge that a different ephemeris, or a birth-time error, could move them across. How much birth time matters depends on the body: the Moon can cross within an hour, the Sun, Mercury, Venus and Mars over several hours, and Jupiter or Saturn only over days. And a body that does cross does not slide to the neighbouring sign - its D3 sign jumps four signs (at a 10-degree edge) or five (at a whole-sign edge).
The Brihat Parashara Hora Shastra’s varga-use verse assigns the Drekkana to happiness through co-born - siblings. Later tradition also connects the D3 with courage and initiative through its link to the 3rd house (the house of siblings, courage, and self-effort). Practitioners look at the D3 Lagna and its lord and the 3rd house from the D3 Lagna, and read the chart together with the D1’s own 3rd house - the varga refines the birth chart rather than overriding it, the same relationship the Navamsa (D9) has with marriage significations and the Dasamsa (D10) with career.
All of this is descriptive tradition, not prediction. This page makes no claims about your siblings, their number, or their lives - the classical text pins the domain to “happiness through co-born”, and nothing here goes beyond that.
This version computes the Parashari D3 chart, houses (whole-sign from the D3 Lagna), the BPHS presiding deities, and the birth-time-confidence checks. It does not compute the alternate drekkana schemes (Jagannatha, Somanatha, Parivritti), the special “22nd drekkana” used in longevity work, or drekkana nature classes, and it ships no predictions and no remedies.
The Drekkana - also spelled Dreshkana - is the third divisional chart (varga) of Vedic astrology: each 30-deg sign is divided into three parts of 10 deg, and every planet is re-mapped to a new sign based on which part it occupies. The classical varga-use verse assigns this chart to happiness through co-born, which is why it is commonly called the siblings chart. It is read alongside the birth chart (D1), not instead of it.
Each sign is split into three parts of 10 deg. The first part (0-10 deg) maps to the sign itself, the second part (10-20 deg) to the 5th sign from it, and the third part (20-30 deg) to the 9th sign from it - a trine step that is the same for every sign (no odd/even rule). This is the Parashari rule in the Brihat Parashara Hora Shastra, and the same rule is stated by mainstream D3 calculators.
This tool computes the Parashari drekkana - the 1st/5th/9th trine described in the Brihat Parashara Hora Shastra, which is the default scheme used by mainstream Vedic calculators. Other drekkana schemes exist (Jagannatha, Somanatha, and Parivritti), and they place planets differently; they are named here for completeness but are not implemented in this version.
The Brihat Parashara Hora Shastra names the three drekkanas of each sign after three sages - Narada, Agastya, and Durvasa - in that order for every sign. The consulted translation prints them as Narada, Agasthya, and Durvash; we use the common ASCII spellings Narada, Agastya, and Durvasa. This tool shows the deity name for each planet's drekkana; it does not attach any predictive meaning to them, because the classical text assigns the names without interpretation.
The 3rd house of the D1 is one house among twelve in the natal chart, classically associated with siblings, courage, and self-effort; the Drekkana is an entire twelve-sign chart derived from finer 10-deg divisions, read for the same domain (happiness through co-born) at higher resolution. Practitioners read the two together - the varga refines the birth chart and does not override it, and it cannot promise what the birth chart does not.
The planet keeps the same sign context in both charts. It is not special: the first drekkana of every sign maps back to the sign itself, so under a uniform-within-sign model a same-sign placement covers one of the three 10-deg parts - one-third of each sign's span. (The classical term vargottama refers to the D1/D9 correspondence, not to D3.)
The ascendant moves through one drekkana (10 deg) in roughly 40 minutes of clock time on average (it varies by rising sign and latitude), so a sizeable error in birth time can shift the whole D3 house framework. This tool reports how many minutes your entered time sits from the nearest D3 Lagna boundary, and flags any planet sitting within about 0.3 deg of a division edge.
Both - use the North Indian (diamond) / South Indian (square) toggle above the chart; both draw the same D3 (Drekkana) placements. In the North Indian format the houses are fixed with the Lagna at the top and the signs rotate; in the South Indian format the signs are fixed in the grid and the ascendant is marked in its box. Pick whichever regional format is more familiar.
No. It computes the classical D3 chart and describes what traditional sources say the chart is read for - happiness through co-born, and in later tradition courage and initiative via the 3rd house. It makes no predictions about your siblings, their number, or their lives, and it offers no remedies.
This page is the canonical surface for these terms: Drekkana, Dreshkana, Dreshkan, Dreshkhamsa, and D3 chart. They all refer to the third divisional chart described above.