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Sankashti Chaturthi Calculator | Find Sankashti Dates for Fasting

A Sankashti Chaturthi Calculator helps calculate sankashti chaturthi calculator using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result with a transparent method and source notes. Use it for planning and learning, then verify important ritual or marriage decisions with a qualified practitioner.

Last updated: June 2026 · Free · No sign-up required

Results

Enter values above and click Calculate to see your result instantly.

Quick reference

2026 sampleWeekdayNote
7 JanWednesdaySakat Chauth (Magha) — biggest of the year in the north
5 FebThursday
7 MarSaturday
6 AprMonday
5 MayTuesdayAngarki Sankashti — Tuesday, extra merit
4 JunThursday
4 JulSaturday

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For ceremonies, marriage matching and legal decisions, verify with a qualified practitioner and your regional panchang.

Interpretation guide

ElementDetail
TithiChaturthi of the Krishna (waning) paksha, every lunar month
Fast windowSunrise to moonrise — broken only after seeing/offering to the moon
AngarkiA Sankashti falling on Tuesday; held equal to a year of Sankashtis
DeityGanesha as Sankata-hara, remover of obstacles
Vinayaka ChaturthiThe Shukla-paksha counterpart, a separate daytime fast

lightbulb Worked example

Let's say you are using the Sankashti Chaturthi Calculator. A Sankashti Chaturthi Calculator helps calculate sankashti chaturthi calculator using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result Enter the values that match your situation into the input fields and press calculate — using realistic numbers makes the result directly useful for you.

Result: The calculator instantly applies the formula Sankashti day = civil day whose sunrise carries the Krishna Chaturthi (19th tithi) and returns the result with appropriate precision.

What this means: Read the result in the context of what you are measuring. The step-by-step breakdown lets you confirm the math and understand which input most affects the outcome.

Formula & methodology

Formula: Sankashti day = civil day whose sunrise carries the Krishna Chaturthi (19th tithi)

The Sankashti Chaturthi Calculator is built on a well-established calculation method. It uses the formula Sankashti day = civil day whose sunrise carries the Krishna Chaturthi (19th tithi) to turn your inputs into a reliable result. A Sankashti Chaturthi Calculator helps calculate sankashti chaturthi calculator using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result with a transparent The steps are shown on the page so you can follow the reasoning from input to output.

  1. Enter the year.
  2. The calculator lists every day whose sunrise tithi is the 4th of the waning fortnight — one per lunar month, 12–14 in a year.
  3. Weekdays are attached; any Tuesday entry is an Angarki Sankashti.
  4. The fast runs until local moonrise that night (moonrise on Krishna Chaturthi is typically 2–3 hours after sunset).

Worked example — 2026 opens with Sakat Chauth on Wednesday, 7 January 2026 and includes an Angarki Sankashti on Tuesday, 5 May 2026; the year carries 13–14 observances, one per lunar month.

Authoritative source: Hindu astrology reference

Frequently asked questions

What is Sankashti Chaturthi?
The Ganesha fast kept on the Chaturthi (4th tithi) of every waning fortnight. “Sankashti” means deliverance from difficulties; devotees fast from sunrise and break the fast only after moonrise, offering arghya to the moon and durva to Ganesha.
Why is the fast broken at moonrise, not sunset?
The vrat’s defining ritual is the evening moon offering — Chaturthi’s moon is linked to Ganesha’s grace in the Puranic story. On Krishna Chaturthi the moon rises late (roughly 2–3 hours after sunset), so the panchang’s moonrise time for your city decides when you eat.
What is Angarki Sankashti?
A Sankashti that falls on a Tuesday (Angaraka = Mars). It is considered as meritorious as a whole year of monthly Sankashtis, and Maharashtra’s Ganesha temples see their largest crowds on it. In 2026, 5 May is an Angarki.
How is Sankashti different from Vinayaka Chaturthi?
Both are monthly Chaturthi fasts for Ganesha: Sankashti is on the waning-fortnight Chaturthi with a moonrise-bound fast, Vinayaka is on the waxing-fortnight Chaturthi with a midday puja. The annual Ganesh Chaturthi festival is simply the Bhadrapada Vinayaka Chaturthi.
Which Sankashti is the most important?
The Magha-month one — Sakat Chauth (7 January in 2026) — is the most prominent, especially in North India, where mothers fast for their children's welfare and tilkut offerings are typical. In Maharashtra every Sankashti Chaturthi is observed with the Ganapati Atharvashirsha recitation, making the monthly observances equally important there.
What does the Sankashti Chaturthi Calculator do?
A Sankashti Chaturthi Calculator helps calculate sankashti chaturthi calculator using Vedic astrology, panchang, calendar, muhurat, Vastu or naming inputs. It gives an instant browser-based result with a transparent method and source notes. Use it for. The calculator takes your inputs, applies the standard calculation, and returns a clear result so you can make an informed decision without doing the math by hand.
What formula does the Sankashti Chaturthi Calculator use?
The Sankashti Chaturthi Calculator applies the standard formula: Sankashti day = civil day whose sunrise carries the Krishna Chaturthi (19th tithi). The tool walks through each step of the calculation so you can verify the numbers yourself.
Is the Sankashti Chaturthi Calculator free and private?
Yes — the Sankashti Chaturthi Calculator. There is no sign-up, no paywall, no trial, and no limit on how many calculations you can run. CalcaTools covers its costs with non-intrusive display advertising, so the calculator itself never asks for payment or restricts any feature.
How accurate is the Sankashti Chaturthi Calculator?
The Sankashti Chaturthi Calculator applies the standard formula: Sankashti day = civil day whose sunrise carries the Krishna Chaturthi (19th tithi). It is tested against published worked examples before launch and uses native double-precision arithmetic, so results are accurate to typical precision for the values you enter — with no intermediate rounding that could distort the answer.

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