Panchang Explained

What “five limbs” really means

The Sanskrit word Panchang (panch + ang) is literally “five-limbed”. Those five “limbs” are five separate astronomical quantities that, together, describe the qualitative shape of a day. They don’t cause anything; they describe the state of the sky and the lunar rhythm at sunrise. The Vedic tradition uses that description to time activities: an auspicious tithi for a wedding, an auspicious nakshatra for travel, a clean karana for a contract, and so on.

Crucially, the Panchang is computed from real astronomy — not a cycle of arbitrary names. We find the actual longitude of the Sun and the Moon for the date and place, apply the classical 360°-based geometry, and read out the five values. There is no opinion involved in the computation; the only modelling choice is the sidereal frame (India universally uses the Lahiri ayanamsa).

The five angas, one by one

How the Panchang is computed

The classical method, applied to a given date and city:

1. Find the exact sunrise for the city from a real astronomical ephemeris.
2. At that sunrise instant, compute the sidereal longitudes of the Sun and the Moon (Lahiri ayanamsa).
3. Tithi: (Moon − Sun) modulo 360, divided by 12. The integer part 0–14 is the Shukla tithi 1–15; 15–29 is the Krishna 1–15.
4. Nakshatra: Moon’s sidereal longitude divided by (360 ÷ 27 = 13°20′). The integer part 0–26 is the nakshatra. The remainder gives the pada (1–4).
5. Yoga: (Sun + Moon) modulo 360, divided by (360 ÷ 27).
6. Karana: half a tithi — divide the Moon − Sun longitude by 6° and apply the 7-movable + 4-fixed sequence.
7. Vara: the weekday of that sunrise in the local timezone.
8. Binary-search the angas’ end times — the next instant each anga changes — for the “till HH:MM” labels.

Astronaad does all of this live for every city we cover, accurate to the minute — so today’s tithi for Mumbai is not assumed to be the same as today’s tithi for New York (which it sometimes isn’t, especially near sunrise tithi transitions).

How to read a Panchang in practice

A typical day on the Panchang gives you three useful things at a glance:

• The flavour of the day — which tithi (auspicious vs. avoid: e.g. Amavasya, Chaturdashi avoid for starts), which nakshatra (gentle/mild vs. sharp), which yoga (a few yogas like Vaidhriti or Vyatipata are noted to avoid).
• The windows of the day — sunrise, sunset, the inauspicious Rahu Kaal / Yamaganda / Gulika, and the auspicious Abhijit Muhurat around midday.
• The detailed sub-tables — Choghadiya day & night, the running tithi/nakshatra end times, and special observances if any.

For planning a specific activity (marriage, vehicle, griha pravesh, business launch …), the Panchang is the raw data; the Muhurat Finder applies the classical rules to score upcoming dates.

Frequently asked questions

What is a Panchang?

Panchang (पंचांग) literally means "five limbs" — the five astronomical quantities that describe the state of the sky for a day and place: tithi (lunar day), nakshatra (the Moon's constellation), yoga, karana and vara (weekday). Together they tell you what the day favours and which times to avoid.

What are the five angas of the Panchang?

Tithi (the angular distance between the Moon and the Sun, in 12° steps); Nakshatra (the lunar mansion the Moon currently occupies, 1 of 27); Yoga (the combined longitude of Sun + Moon, 1 of 27); Karana (a half-tithi, 1 of 11 named units); and Vara (the seven planetary weekday).

How is a Panchang calculated?

From the real positions of the Sun and Moon on a given date and place, using sidereal longitudes (the Lahiri ayanamsa in India) and the exact local sunrise. The five angas are computed at sunrise (the udaya-tithi rule), with each anga's precise start and end times derived from a real astronomical ephemeris.

Why is the Panchang computed at sunrise?

In Vedic timekeeping, the day begins at sunrise — not midnight. So the values that "define" the day (the tithi, nakshatra, etc.) are taken at sunrise. This is the classical udaya-tithi rule and it's what makes a Panchang for one city different from another: each has its own sunrise.

Why does the Panchang differ from city to city?

Because the angas are anchored to the local sunrise — which changes with latitude, longitude and date. A panchang computed for Ujjain (the historical zero-meridian of Indian astronomy) is not exact for New York. Each city has its own sunrise, sunset, Rahu Kaal, Choghadiya windows and even — rarely — a different tithi at sunrise.

What is the difference between Vedic and modern calendars?

The Gregorian calendar is purely solar: every day is the same length and "the day" starts at midnight. The Vedic Panchang is lunisolar and astronomical: the day starts at sunrise, lunar units (tithi, paksha, lunar month) define the rhythm, and the actual positions of the Sun and Moon decide everything.

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