Gowri Panchangam

What is the Gowri Panchangam?

The Gowri Panchangam — Gowri Panjangam, and in everyday Tamil usage simply Nalla Neram, “good time” — is the Tamil tradition’s quick answer to when should I do this?

It divides the daylight into eight equal periods and the night into eight more, and gives each one a name and a verdict. It is the table people actually check before leaving for an interview, starting a journey, or signing something. Like Choghadiya in the north, its appeal is that it needs no calculation: you look, you see whether the next hour is Amirdha or Rogam, and you decide.

The eight periods

The five good periods — Amirdha, Uthi, Laabam, Dhanam and Sugam — are the Nalla Neram. The three to avoid are Rogam, Soram and Visham.

Visham is Rahu Kalam

This is the part most explanations skip, and it is the key to reading the table.

Seven of the eight periods are the weekday lords, in weekday order: Uthi belongs to Sunday, Amirdha to Monday, Rogam to Tuesday, Laabam to Wednesday, Dhanam to Thursday, Sugam to Friday, Soram to Saturday. They rotate in that fixed order, starting each day from that weekday’s own lord — so Wednesday’s day table opens at Laabam, Thursday’s at Dhanam, and so on.

Visham is the eighth, and it is not part of that rotation at all. It is Rahu Kalam. It is inserted at whichever slot Rahu Kalam occupies that weekday, and the seven lords arrange themselves around it. That is why its position jumps around — 2nd on Monday, 7th on Tuesday, 5th on Wednesday — while everything else marches in order. Those are exactly the classical Rahu Kalam slots.

You can see this for yourself: compare the Visham row against the Rahu Kaal window for the same day. They are the same period. Some Tamil almanacs drop the pretence and print “Rahu Kala” in that slot instead of Visham.

Once you know this, the table stops looking arbitrary. It is the weekday lords in a ring, with Rahu punched into it.

How the day and night tables relate

The night is not a repeat of the day, and it is not a simple continuation either. The night table starts from the lord of the weekday four days later: Wednesday’s night opens at Uthi (Sunday’s lord), Thursday’s at Amirdha (Monday’s), and so on. Visham is then inserted at its own night slot, which follows its own pattern.

The practical consequence: a period that was inauspicious this afternoon may be perfectly good tonight. Check the half you are actually in.

A worked example — Sunday

Sunday’s day table opens at Uthi (Sunday’s own lord) and runs the seven lords in order, with Visham (Rahu Kalam) inserted at the 8th slot for Sunday:

Sunday’s night starts four lords along (from Dhanam) and inserts Visham at its own 4th slot:

Notice Amirdha — the best period — is the 2nd slot by day but the 6th by night: the same name, a different clock position in each half. That is why you always read the half you are in.

Reading the times

Each period is one-eighth of the real daylight or the real night at your location, not a flat 90 minutes:

• In a Chennai summer the day periods stretch well past 90 minutes while the night periods compress.
• In winter the reverse.
• Two cities on the same date see different clock times, because their sunrise and sunset differ.

AstroShruti computes both from the true local sunrise and sunset for the city you select, so the boundaries are real rather than nominal.

Common mistakes

• Expecting Visham in a fixed slot. Visham is Rahu Kalam, so it jumps to whatever eighth Rahu Kaal occupies that weekday — 2nd on Monday, 7th on Tuesday, and so on.
• Reading the night off the day table. The night starts four lords along and places Visham differently; a good afternoon slot can be a poor evening one.
• Assuming 90-minute periods. Each is one-eighth of the real day or night, so they stretch and compress with the season and differ by city.
• Treating Gowri and Choghadiya as rivals. They are the same idea in two traditions — cross-check, don’t agonise over which to “believe”.

A note on Saturday night

There is a genuine quirk in the published tables worth knowing about, because you will notice it eventually and wonder whether the page is broken.

The rotation of seven lords implies each name appears exactly once per table. It does — in thirteen of the fourteen tables. On Saturday night, the eighth period repeats Soram, and Rogam does not appear at all.

The structure predicts Rogam there. But every published Gowri Panchangam we checked prints Soram, and they agree with each other. The reason is that these tables are transcribed from the printed Pambu Panchangam of Tamil Nadu rather than generated from a rule — so whether this is a genuine feature of the tradition or an old typographical error that everyone inherited is not something we can settle from the outside.

We follow the printed tradition. A table that is uniquely “correct” against every almanac in Tamil Nadu would not be much use to anyone holding one.

Notes on this table

• Times are local to the selected city, from its true sunrise and sunset.
• The Visham period is Rahu Kalam and is marked as such.
• Verified against the published Tamil Gowri Panchangam tables for every weekday, day and night.