How this panchangam is computed

Drik basis, Swiss Ephemeris, Lahiri ayanamsha, and every rule traced to a text we have read from the page.

A panchangam is a claim about the sky and about a tradition's rules for reading it. Both halves can be checked, and this section exists so you can check ours.

Today

The day as computed, with every value on this page applied, for seven cities.

The five limbs

Tithi — twelve degrees of elongation, thirty to a month, and the only limb the ayanamsha cannot touch.
Nakshatra — the Moon's sidereal longitude in 27 arcs, and why "Lahiri" is not one number.
Yoga — the sum of two longitudes, not a relationship between them.
Karana — half a tithi, and why eleven names cover sixty slots.
Vara — the day runs sunrise to sunrise, which explains most calendar arguments.

The windows

Rahu kalam — one eighth of the daylight, picked by weekday. A table, not an astronomy.
Gowri panchangam — the eight named windows, and how the ring rotates from one weekday to the next.

Basis and boundaries

Drik and vakya — why the almanac on your wall and the app in your pocket disagree, sometimes by hours and once by thirty-eight days.
Sankranti to civil day — one instant, five regional rules, several possible dates.

Rules we publish

Pradosham · Ekadashi · Sankashti · Masik shivaratri — each with the passage it comes from and the leaf it sits on.

How to check us

How this panchangam is checked sets out the standard every entry is held to. Each rule page names the passage it rests on.