Pradosh Vrat is a fast for Lord Shiva, kept on Trayodashi — the thirteenth lunar day — and worshipped not at dawn but at dusk, in the pradosh-kaal, the roughly ninety-minute twilight around sunset. The vrat takes its name from the weekday it lands on. When that Trayodashi falls on a Wednesday, it becomes Budh Pradosh, also known as Saumya Pradosh.
Wednesday belongs to Budh — Mercury — the planet of intellect, speech, learning and trade. Keeping the Shiva fast on his day is held to layer that dimension over the base worship, which is why students, professionals and those in business are drawn to it. This guide covers why the Wednesday matters, what Mercury lends to the fast, the pradosh-kaal window, and how the vow is kept.
Budh Pradosh at a glance
Date in 2027
Wednesday, 20 January 2027
Tithi
Trayodashi (13th lunar day)
Presiding deity
Lord Shiva
Weekday & planet lord
Wednesday, ruled by Budh (Mercury)
How it is kept
Day fast; Shiva puja in the Pradosh-kaal
When Budh Pradosh falls
A Trayodashi meets a Wednesday only in some months, so this is not a monthly date. Here is the next Budh Pradosh with its pradosh-kaal window.
In 2027, Budh Pradosh is kept on Wednesday, 20 January 2027 — the Pradosh-kaal worship window opens 20 January 2027, 05:49 PM and closes 20 January 2027, 08:13 PM.
Pradosh-kaal begins
20 January 2027, 05:49 PM
Pradosh-kaal ends
20 January 2027, 08:13 PM
| Upcoming dates | Day |
|---|---|
| 20 January 2027 | Wednesday |
| 3 February 2027 | Wednesday |
| 2 June 2027 | Wednesday |
Times shown for New Delhi; pick your city on the Pradosh Vrat calendar for local timings.
The Wednesday that makes it Budh Pradosh
How a weekday gives the vrat its name — and its second name, Saumya
Every Pradosh Vrat is the same fast at heart: Trayodashi, Lord Shiva, and worship held in the twilight pradosh-kaal. What changes from one Pradosh to the next is the weekday it happens to fall on, and Hindu tradition treats each weekday as belonging to a planet. Wednesday belongs to Budh — Mercury. So a Trayodashi that lands on a Wednesday is kept as Budh Pradosh, and the day's planetary lord is understood to add his own colour to the Shiva worship.
The vrat carries a second name, Saumya Pradosh. Saumya is an old name for Mercury, and Wednesday is likewise called Saumyavar in the almanac, so Budh Pradosh and Saumya Pradosh are one and the same day — the label simply depends on which name for the planet a text prefers.
Because a Trayodashi meets a Wednesday only in some months, Budh Pradosh is not a fixed monthly date. It arrives when the lunar calendar and the day of the week line up, which is why devotees who keep this particular Pradosh watch the panchang rather than a single day of the month.
What Mercury lends to a Shiva fast
Intellect, clear speech, study and trade
In Jyotish, Budh governs the reasoning mind — intelligence, memory, analysis, and the quickness that turns knowledge into skill. He is equally the planet of speech and communication: the clarity of what you say and write, and the tact that lets it land well. And he rules commerce — trade, accounts, negotiation and the day-to-day intelligence of doing business.
Keeping the Pradosh fast on Budh's day is held to draw these threads toward the observer. The base of the vow stays what it always is — Shiva worship at dusk — but the intention many bring to Budh Pradosh leans toward a steadier mind, cleaner communication, and progress in studies or trade. Students preparing for examinations, people whose work turns on writing or speaking, and those running a shop or a business commonly turn to this Pradosh for that reason.
None of this is a transaction. The tradition frames it as grace sought through devotion and discipline, not an outcome bought with a fast — the effort is the point, and the mind it settles is the first reward.
Fasting through the day, worship at the seam of day and night
The pradosh-kaal window and how the vow is kept
The day is kept as a fast. Most observers bathe in the morning, resolve to keep the vow, and pass the day on fruit, milk and water; some keep it stricter, others lighter, according to their strength. Through the day the mind is turned to Shiva, but the worship itself waits for the evening.
The heart of the vrat is the pradosh-kaal — the roughly ninety-minute window around sunset, when day meets night. In this twilight the Shiva puja is performed: abhishek of the Shivling with water or milk, the offering of bilva (bel) leaves, a lamp, and the chant Om Namah Shivaya, with the Pradosh Vrat Katha read before the worship closes. Because the window hangs on sunset, its clock time shifts with your city and the season; the timing card on this page gives the next Budh Pradosh window. The fast is broken after the evening puja is complete.
Keep the fast to your strength
Who turns to Budh Pradosh — and what to expect
An honest word on intention and benefit
Budh Pradosh draws two kinds of observers. Some keep every Pradosh through the year as a standing devotion to Shiva and simply note the Wednesday as its Budh form. Others keep this Pradosh in particular — students before an examination, writers and speakers, traders and shopkeepers, anyone seeking clearer thought or a better hearing for their words — because Mercury's domains are the ones they most want to steady.
What the tradition promises is best read as advisory, not a guarantee. A fast kept with attention is said to sharpen the mind, cool the speech and bring a calmer footing in study and trade; it is not a lever that forces an examination result or a deal. Kept in that spirit — as discipline and devotion rather than a bargain — Budh Pradosh sits comfortably alongside the everyday effort it is meant to support.
If what you are facing is real distress rather than a wish for a smoother week — persistent anxiety, a crisis in work or study, or a mental-health struggle — treat the vrat as a source of steadiness, not a substitute for qualified help, and reach out to a professional as well.
Today's panchang for your city
Tithi, nakshatra, sunrise and the day's muhurat — worked out for wherever you are.
Budh Pradosh Vrat: common questions
The Wednesday name, the pradosh-kaal window, and how the fast is kept.