How often does Pradosh Vrat occur?

Twice a month — once in Shukla Paksha, once in Krishna Paksha.

What is Pradosh Kaal?

The specific twilight window (roughly 1.5 hours before and after sunset) considered most auspicious for Pradosh worship — this varies by location and date, unlike the calendar date itself.

Why do some Pradosh Vrats have special names?

The variant name (Som, Bhaum, Shani Pradosh) simply reflects which day of the week the Trayodashi falls on, each carrying its own traditional significance.

Why might this differ by a day from another source?

This tool uses a fixed midday reference instant rather than the exact moment of the Tithi transition — a date very close to that boundary can occasionally shift by a day.

Can I search from a future date?

Yes — enter any starting date, and the tool finds the next 6 Pradosh Vrat occurrences from that point forward.

Is Pradosh Vrat linked to Sankashti Chaturthi?

No — they're separate observances on different Tithis (13th vs. 4th) dedicated to different deities (Shiva vs. Ganesha), though both recur monthly or twice-monthly.

How is the date calculated?

By computing the real lunar Tithi (Moon-Sun angular distance, sidereal, Lahiri ayanamsa) day-by-day from the start date until the 13th Tithi of either Paksha is found.

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Pradosh Vrat Date Calculator

The next 6 Pradosh Vrat (Trayodashi) dates from any starting date.

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Last reviewed 2026-09-06

About the Pradosh Vrat Date Calculator

Finds the next 6 Pradosh Vrat (Trayodashi) dates from any starting date.

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How to use it

Enter a starting date (defaults to today).
Read the next 6 calculated Pradosh Vrat dates.

Formula

Pradosh Vrat falls on Trayodashi (the 13th Tithi) of each Paksha — occurring twice per lunar month — found by searching forward day-by-day from the given start date for the next matching Tithi.

Worked example

From 7 September 2026, the next 6 Pradosh Vrat dates are calculated as: 9 Sep, 24 Sep, 8 Oct, 24 Oct, 6 Nov, 22 Nov.

Pradosh Vrat by weekday

Pradosh Vrat by weekday
Weekday it falls on	Name	Special significance
Monday	Som Pradosh	Considered to fulfill wishes and remove obstacles
Tuesday	Bhauma/Bhaum Pradosh	Associated with removing debt and health troubles
Saturday	Shani Pradosh	Associated with relief from Saturn-related (Shani) difficulties

Interpreting your result

This is a calculated approximation using a fixed India Standard Time midday reference. Pradosh Vrat worship is traditionally performed during Pradosh Kaal, a specific window around sunset — this tool gives the calendar date, not that exact time window, which varies by location.

Recommendations

• The specific named variant (Som Pradosh, Bhaum Pradosh, Shani Pradosh) depends purely on which weekday the Trayodashi falls on that occurrence — this tool calculates the date; check the day of week to identify the variant.

Frequently asked questions

A fast observed on Trayodashi (the 13th Tithi) of each Paksha, dedicated to Lord Shiva, with worship traditionally performed during Pradosh Kaal (the twilight period around sunset).