Shukra Pradosh Vrat on October 23: why the sunset rule decides

Shukra Pradosh Vrat falls on Friday, October 23, 2026, the Trayodashi (13th lunar day) of the bright half of the month of Ashwin, two days before Sharad Purnima. Panchang listings published this week, several of them based on Drik Panchang's calculations for New Delhi, place the evening puja in the Pradosh kaal, the twilight period around sunset, and the fast is broken on the morning of Saturday, October 24. The Shukra Pradosh Vrat katha, the traditional story read during the observance, is linked to the planet Venus, known as Shukra, after which Friday is named.

Pradosh Vrat is kept twice each lunar month, on the Trayodashi of the waxing and the waning fortnights, and is dedicated to Shiva and Parvati. Its date is not fixed by the civil calendar but by a rule that joins two measurements: the lunar day (tithi), which is based on the angle between the Sun and the Moon, and the time of local sunset. That makes it a good everyday example of how the Indian calendar system works.

The rule, as Drik Panchang sets it out, is that the fasting day is the one on which Trayodashi prevails after sunset, during Pradosh kaal. This year Trayodashi starts on Friday afternoon and runs into Saturday afternoon. Because it is already current at Friday's sunset, and has ended before Saturday's sunset, Friday is the day. A tithi does not begin at midnight or sunrise; it can begin at any hour, which is why the same festival sometimes falls on different days in different almanacs.

The length of Pradosh kaal is described in slightly different ways. Some panchang publishers describe it as about one and a half hours on either side of sunset; others describe a shorter window of about 45 minutes on each side. Since sunset in Chennai, Kolkata, Mumbai and Delhi happens at different times, the puja window shifts by city. The two puja windows published for New Delhi this week, which do not match each other, show why devotees are told to check a panchang for their own city.

The weekday name adds a second layer. In the Indian tradition each day of the week is linked to a graha: Friday to Shukra (Venus), Monday to Soma (the Moon), Saturday to Shani (Saturn). A Pradosh that falls on a Friday is therefore called Shukra Pradosh, and according to tradition it is associated with prosperity and harmony in married life.

The katha read on this day, according to Drik Panchang's summary of the Pradosh stories, tells of a wealthy man's son who brings his wife home during Shukra Asta, the period when Venus cannot be seen in the sky. He is bitten by a snake, and the story says his life is saved through the observance of the Shukra Pradosh Vrat. Like other vrat kathas, it is a matter of belief and devotional tradition, not a historical record.

Calendar facts at a glance:

Short-term: Devotees keeping the fast will hold the evening puja on October 23 and break the fast on Saturday morning. Temples dedicated to Shiva usually hold evening worship at Pradosh time.

Long-term: The same sunset rule decides every Pradosh of the year, as well as other evening observances such as Dhanteras and Karwa Chauth, so understanding it helps readers make sense of why almanacs sometimes disagree.

Who is affected: Devotees of Shiva who keep the Pradosh fast, families who follow the panchang for festival dates, and temple priests who set the time of evening worship.

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