How birth charts are drawn for you across the site.
Mean nodes are the smoothed average; True nodes use the osculating (instantaneous) position.
Sivayan uses the Lahiri ayanamsa — the Government of India standard and the most widely used in Vedic astrology — for every calculation, to keep results deterministic and reproducible. Alternative ayanamsas are not currently selectable.
Calculation settings
Choose how charts are drawn and how the lunar nodes are computed. Your preferences are saved on this device.
Free with a Sivayan account — sign up takes under a minute.
These settings control how Vedic charts are presented and a couple of calculation options. The ayanamsa - the sidereal correction at the heart of Vedic astrology - is fixed to Lahiri, the most widely used standard, so results stay deterministic and reproducible.
What you can set
Chart style
North Indian (diamond), South Indian (square) or East Indian (Bengali grid).
Lunar nodes
Mean Rahu/Ketu (standard) or True (osculating) nodes.
Ayanamsa
Lahiri (Chitrapaksha) - the Government of India standard used throughout.
Common questions
Sivayan standardises on Lahiri so every reading is deterministic and reproducible. Offering a switch that didn't truly re-derive the engine would be misleading.
Mean nodes use the smoothed average motion of Rahu/Ketu; True nodes use the instantaneous (osculating) position, which can differ by up to ~1.5°.
On this device, in your browser. They are applied to the chart tools as you use them.
All three show the same chart - North, South and East Indian are regional drawing conventions, not different calculations.