The direct answer: What Is Paksha? Shukla vs Krishna Paksha: A paksha is a lunar fortnight — Shukla is the waxing half, Krishna the waning half. It's a panchang term, not a lucky half-month. AskSoma publishes this at asksoma.ai/blog/what-is-paksha as a free Vedic astrology resource using Swiss Ephemeris calculations and classical Jyotish interpretation — not generic sun-sign copy.
A paksha is a lunar fortnight — Shukla is the waxing half, Krishna the waning half. It's a panchang term, not a lucky half-month.
A paksha is a lunar fortnight: the container that holds a run of tithis, not a tithi itself and not a lucky half-month. Shukla is the waxing half, elongation growing from the Sun-Moon conjunction toward 180. Krishna is the waning half, from opposition toward the next conjunction. AskSoma prints the running paksha from Swiss Ephemeris with Lahiri ayanamsa, labeled in the city's local clock. This page teaches the container. It does not rank fortnights, and it cannot guarantee a marriage, a job, or a visa.
A paksha is not a lunar day. It is the span that a sequence of lunar days sits inside. One bright half, then one dark half, then the next bright half. The tithi is the unit. The paksha is the shelf.
Household speech often collapses the two. Someone says "this is a good paksha" the way they say "this is a good tithi." That collapse is the first error. A fortnight can contain mixed tithis, mixed karanas, and a festival on one evening only. The box is not the contents.
AskSoma derives the Moon and Sun from Swiss Ephemeris, then converts to the sidereal frame with Lahiri (Chitra Paksha) ayanamsa — the same stack as /panchang. See /methodology. The daily row prints which paksha is running and when the current tithi inside it starts and ends. This page will not rebuild a thirty-name list. That list belongs to the tithi explainer. This page will not time the eleventh as a vrat. That belongs to /ekadashi. This page will not reprint a live Amavasya table.
Shukla paksha begins at the Sun-Moon conjunction — the instant elongation is zero — and runs while that elongation grows toward 180 degrees. The Moon is gaining light as seen from Earth. Families call it the bright half, the waxing fortnight, the shukla side.
Krishna paksha begins at opposition — elongation 180 degrees, the full Moon — and runs while elongation continues toward the next conjunction. The Moon is losing light. Families call it the dark half, the waning fortnight, the krishna side.
That is the geometry. Conjunction opens Shukla. Opposition opens Krishna. The next conjunction closes Krishna and opens the next Shukla. Two fortnights make one lunar month. The month name your jantri prints is a separate habit. This page will not referee amanta versus purnimanta.
Do not treat Shukla as lucky and Krishna as cursed. Houses that prefer certain rites in one half are applying a household filter. A filter is not a verdict on a visa, a job, or a marriage. A dark fortnight can hold an ordinary Tuesday. A bright fortnight can hold a hard week. The engine named which half was open. Narration is not a court.
Purnima is the close of the bright half, not a second calendar. Amavasya is the close of the dark half, not a live date table on this page. If you only need "has the half flipped yet," read the paksha line on /panchang. If you only need the named new-moon civil date for a city, use the Amavasya filter, not this explainer.
Gujarati jantris print Sud and Vad. Sud is Shukla. Vad is Krishna. Tamil panchangam speech says Valarpirai for the waxing half and Theipirai for the waning half.
Those words are language. They are not a different sky. A Sud Chaturthi in Ahmedabad and a Valarpirai Chaturthi in a Tamil household are the same bright-half fourth if the engine used the same ephemeris and the same ayanamsa at the same instant. The festival notes in the margin can differ. The elongation half cannot.
WhatsApp forwards often treat the Gujarati pair as a rival calendar. They are a translation. If an uncle in Ahmedabad says "Vad Ashtami" and a cousin in Bengaluru says "Krishna Ashtami," they are naming one container and one slot inside it. Argue about the rite, not about whether the Moon is waning.
AskSoma can print the shared half. It cannot flatten every regional observance into one banner. Tamil panchangam, Gujarati jantri, and a London temple pamphlet may list different festival footnotes on the same Krishna fortnight. The fortnight is still the waning container.
Elongation at one UTC instant is sky-wide. The Moon does not wax in Bengaluru and wane in Boston at the same second. What changes with the city is the civil clock that labels the flip, and the local sunrise that some printed calendars use when they assign a civil date to a half.
A paksha change is an instant: conjunction or opposition. That instant has one UTC time. Boston, Bengaluru, Ahmedabad, San Jose, and London then write different face-clock labels on it. San Jose is roughly twelve and a half hours behind IST. A flip at 6:40pm in Ahmedabad can still be morning in San Jose on the same Gregorian date — or already the previous civil evening, depending on the month.
Printed India panchang PDFs stamp the flip in IST. Pasting that PDF into a London or Boston group is the usual miss. The sky agreed. The civil date line did not.
Sunrise assignment adds a second layer. Some wall calendars name the civil day by the paksha and tithi current at local dawn. If opposition falls at 4:10am in Bengaluru, the printed Friday may already show Krishna while a family in San Jose, still before their own dawn, is reading a Thursday Shukla row.
Enter the city you are standing in, or the city where the rite will happen. Do not keep New Delhi as a default. US daylight-saving in Boston and San Jose, and British Summer Time in London, move the civil labels again. The IANA zone is part of the stamp. See /methodology.
You do not need a birth time to read today's paksha. You need a place.
Read the fortnight as context. Then read the tithi range. Then, if your house cares, read the overlays.
**Read today's paksha** for the city you are in at /panchang. Engine notes: /methodology.
This is a labeled hypothetical, not a claimed opposition and not a personal reading.
Suppose opposition falls on a civil Thursday at a UTC instant that Ahmedabad labels 6:40pm. Bengaluru, close in longitude, will print a similar evening clock. London will still be afternoon. Boston will still be morning. San Jose may still be breakfast.
A family in Ahmedabad that starts a small Purnima rite after sunset is already inside the first hours of Krishna if opposition was at 6:40pm. Their cousin in San Jose who opens an IST screenshot at breakfast on that same Thursday may still see Shukla on the India PDF and "Purnima this evening" in the caption. The cousin's local morning is still before the flip. The caption was written for IST evening.
A Bengaluru reprint of the same UTC instant will agree on the half. It will not agree with a London wall calendar that assigned the civil date by London sunrise. If London dawn was still Shukla, the printed London Friday may keep the bright-half stamp even after the evening has gone dark.
The engine should compute the Moon and Sun from Swiss Ephemeris with Lahiri ayanamsa, then label the flip in each city's zone. If two Lahiri engines disagree on the half at the same UTC instant, someone used a noon table, a different ayanamsa, or a rounded minute.
A bright fortnight can hold a hard week. A dark fortnight can hold an ordinary Tuesday. The engine named which half was open. Narration is not a court.
Open today's row at /panchang. Engine: /methodology.
A lunar fortnight: the container of a run of tithis, Shukla while elongation grows from conjunction toward 180 degrees, Krishna from opposition toward the next conjunction.
No. A tithi is one lunar day inside the fortnight. The paksha is the half-month box. This page will not rebuild the name list. Read the tithi explainer for the day, and /panchang for the live row.
Sud and Vad, Valarpirai and Theipirai, are language for Shukla and Krishna. Same elongation half. Different speech. Not a second calendar.
The flip is one UTC instant. Civil clocks and local sunrises differ. San Jose, Boston, and London need their own zone stamps. A Delhi screenshot is the usual miss. Set the city you are standing in.
No. AskSoma computes the Moon and Sun from Swiss Ephemeris with Lahiri ayanamsa. It cannot guarantee a marriage, a job, or a visa. A fortnight is a light cycle, not a verdict. See /methodology.
No. You need a date and a place. Natal charts are a different instrument. Open /panchang.
Open /panchang, city set to where you are standing. For the eleventh as a vrat, use /ekadashi. Engine: /methodology.
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Written by Savan Vyas, founder of AskSoma.
The astrology is not written from memory: every chart position, dasha period and panchang timing AskSoma shows is computed with the Swiss Ephemeris on the Lahiri (Chitrapaksha) ayanamsa. How we calculate.