How to Read a Jamakkol Prasanam Chart: Udhayam, Arudam, Kavippu and the Eight Jama Planets

Jamakkol Prasanam is the Tamil system of horary astrology. Instead of a birth chart, it uses the sky at the moment a question is asked, together with a special wheel of points and "Jama" planets, to answer one specific question. This guide explains every part of a Jamakkol chart and how the Astrometry Jamakkol Prasanam software turns it into a verdict, so you can follow the reasoning behind each answer rather than taking it on trust.

When to use Jamakkol

Jamakkol is a question-based method. It suits concrete questions with a clear outcome: "Will I get this job?", "Will the loan be repaid?", "Will the property deal close?". It does not need a birth time, which makes it useful when the birth time is unknown. If you are deciding between a natal and a question-based approach, read birth chart vs horary software first, and for background on the wider tradition see Prashna (horary) astrology.

Two habits improve every reading: ask one clear question at a time, and choose the place where the question is actually being asked, because sunrise, sunset and the Jamam periods all depend on location.

The Jamam: eight periods of day and night

The software divides the time from sunrise to sunset into eight equal Jamams, and the time from sunset to the next sunrise into another eight. The chart header shows the weekday, whether it is a Day or Night Jamam, its number and its start and end times. Each Jamam has a ruling planet that follows the weekday lord, and the page summarises its flavour: a Jupiter Jamam is described as the most auspicious, a Mercury Jamam suits talks, writing and negotiations, while a Saturn Jamam brings slow, structural answers. Because Jamams are shorter in winter days and longer in summer days, the same clock time can fall in different Jamams across the year.

The three key points: Udhayam, Arudam and Kavippu

Point	What it represents	How it moves
Udhayam	The querent and new beginnings; it acts as the lagna of the question. All houses are counted from Udhayam.	Starts from the Sun's sidereal position at sunrise and advances through all twelve signs across the day span, and again across the night span.
Arudam	The matter asked about and how it resolves.	Moves 6 degrees for every minute past the hour, a full circle each clock hour.
Kavippu	The obstruction or "covering" of the chart; it damages whatever house it falls in.	Derived from Udhayam's sign and Arudam, moving in the opposite direction to Arudam.

The software also shows Maandi, and for Udhayam, Arudam and Kavippu lists the sign, degree, nakshatra, pada, star lord and sub lords, using the Lahiri (True Chitra) ayanamsa. If you already use KP, the star and sub lords will be familiar; see KP houses and significators.

The eight Jama planets

Alongside the real (transit) planets, Jamakkol places eight Jama planets on a fixed wheel, each 45 degrees from the next, in this order: Jama Sun, Jama Snake, Jama Moon, Jama Saturn, Jama Venus, Jama Mercury, Jama Jupiter and Jama Mars. The whole wheel turns backwards at 30 degrees per clock hour, anchored to the weekday lord, and the Jamakkol day rolls over at 6:00 AM local time.

The engine checks how each Jama planet stands relative to Udhayam:

With Udhayam (same sign) or approaching it (within 60 degrees ahead) - the planet describes the present or future theme of the question.
Crossed Udhayam (within 60 degrees behind) - it points to a past problem in that planet's area.
Far - it does not colour the question.

The themes come from the rulebook. For example, Jupiter covers money, gold, teachers, children, higher education, banks, religion and government jobs; Venus covers spouse, love, marriage, vehicles and money; Saturn covers job, longevity, old houses and servants; and the Snake covers foreign countries, conception and change of place.

Step-by-step: how a question is read

1. The question is classified

When you type your question, the software matches its words to a topic such as marriage, career, education, loan, court case, travel, property, vehicle, share market, funding, a lost article or a missing person, and falls back to a general reading when nothing matches. It also notices relatives: "father" is read through the Sun, "mother" through the Moon, "brother" or "husband" through Mars, "wife" or "sister" through Venus and "son" through Jupiter. Each topic has its own significator and houses on top of the general rules below.

2. The Udhayam lord

The lord of Udhayam's sign represents the querent's strength. If it is exalted, desires tend to be fulfilled; if debilitated, the querent's desire is usually not fulfilled. The house it occupies, counted from Udhayam, shows where the querent's mind really is. In the 11th it generally indicates success; in the 6th, 8th or 12th it shows struggle.

3. Arudam's house from Udhayam

Arudam's position shows what the question truly concerns, and its distance from Udhayam is one of the strongest signals in the chart:

Arudam from Udhayam	Reading
Same sign (1/1)	Intent aligned with the moment - supportive
5/9	Success
3/11	Success
2/12	Failure
6/8	Failure; the event may not happen or its fruit may not be enjoyed
4/10	Failure
1/7	Delay and failure

4. Kavippu

Kavippu damages the matters of the house it occupies, and any planet sitting with it has its significations spoiled. Kavippu in the 1st turns questions about the self negative, in the 2nd shows obstacles and no increase, and in the 11th shows a desire not fulfilled. Kavippu together with Maandi marks that sign as heavily afflicted.

5. The instant method and empty Udhayam

Success is also indicated when the lord of the 10th or 11th is connected to Udhayam: the same planet lords both, the 10th or 11th lord sits in Udhayam, the two lords exchange signs, or the Udhayam lord is placed in that house. When no planet stands on Udhayam, the rising type of the sign matters: a Sirsodaya sign shows success, a Prishtodaya sign shows failure, and Pisces (Ubhayodaya) shows success after delay.

6. The final-word rules

Some conditions override everything else. The software treats these as a decisive NO:

The Jama planet of the Udhayam lord is debilitated - the querent lacks the strength and sanction to achieve the objective.
Kavippu falls on Arudam (the matter itself is veiled, with loss or a dead end), on Udhayam (the querent is in darkness or making misguided decisions) or on the chart's actual rising sign (circumstances are paralysed by hidden issues).

A debilitated lord of Kavippu's sign aggravates the obstruction, Rahu on Udhayam adds confusion and clouded judgement, and Ketu on Arudam adds legal complications or lack of finality.

How the verdict is decided

Every factor the engine finds is listed with its rule reference, so the reasoning is fully visible. Supporting factors add to the score, obstructing factors subtract, and delay factors subtract half a point and mark the outcome as delayed. The label follows directly:

Any final-word rule - NO, treated as decisive.
Score of +2.5 or more - YES.
Score of -2.5 or less - NO.
A delay factor with a score in between - DELAY / CONDITIONAL.
Otherwise a small positive balance is LEANS YES, a small negative balance LEANS NO, and an exact balance MIXED.

If the chart leans favourable but the significator is weak, the label becomes CONDITIONAL: the matter can succeed, but the specific thing asked for may be ill-advised.

Using Jamakkol responsibly

A horary verdict answers the question as it was asked at that moment. Do not keep re-asking the same question until you like the answer, and treat health, legal and financial verdicts as one input alongside qualified professional advice. For questions about timing over months or years, a natal approach such as Nadi/KP Astrology/Horary or your Vimshottari Dasha periods is usually a better fit.

Free chart, paid readings and the Desktop Edition

The Jamakkol chart itself is free: pick a place and you get the live rasi chart, Jamam, Udhayam, Arudam, Kavippu, the Jama planets and the planetary degrees. A full reading for your question costs ₹95 per question online; other plans are on the pricing page. The Jamakkol Desktop Edition runs the same local engine for charts, verdicts and reports without internet once activated; see the Desktop Edition install guide and Online vs Desktop editions.