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Janmashtami Date Calculator

A Janmashtami Date Calculator helps calculate janmashtami date 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

YearJanmashtami (Smarta)Weekday
202426 AugustMonday
202515 August (ISKCON 16th)Friday
20264 SeptemberFriday
202725 AugustWednesday

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

Interpretation guide

ElementDetail
TithiKrishna Ashtami of Bhadrapada (Amanta) / Shravana (Purnimanta)
Decisive momentNishita Kaal — the midnight hour, Krishna’s birth moment
Preferred nakshatraRohini — when Ashtami + Rohini coincide it is Jayanti yoga
Fast endsAfter midnight puja, or next sunrise per family tradition
Vaishnava (ISKCON) ruleCan differ by one day — they avoid Saptami overlap at sunrise

Formula & methodology

Formula: Janmashtami = the day Krishna Ashtami is running at Nishita (solar midnight)

  1. Enter the year.
  2. The calculator finds when the 8th tithi of the waning fortnight (Krishna Ashtami) is running at midnight — Krishna’s traditional birth moment.
  3. It requires the month to be Bhadrapada/Shravana (checked via the Sun’s sign at the previous new moon).
  4. The matching civil date and weekday are returned; the midnight puja belongs to that night.

Worked example — 2026: Krishna Ashtami spans the midnight of Friday, 4 September 2026, so the fast and the midnight Krishna-janma celebration fall on the 4th, matching Drik panchang. In 2025 the same rule gave 15 August (Smarta), with ISKCON observing the 16th.

Authoritative source: Drik Panchang — Hindu Calendar & Panchang

Frequently asked questions

When is Janmashtami in 2026?
Krishna Janmashtami is on Friday, 4 September 2026. Ashtami tithi covers that night’s Nishita (midnight) period, when the birth ceremony (janma-mahotsava) is performed.
Why is midnight the deciding moment?
Scripture places Krishna’s birth at midnight in Mathura’s prison. So unlike most festivals (decided at sunrise or midday), Janmashtami goes to the day whose midnight carries Ashtami — the Nishita rule this calculator applies.
Why do Smarta and ISKCON dates sometimes differ?
Vaishnava rules refuse to begin the fast on a day whose sunrise still carries Saptami (7th tithi) and give extra weight to Rohini nakshatra. When Ashtami starts late in the evening, Smartas observe that day but Vaishnavas wait one more day — as in 2025 (15 vs 16 August).
What is Jayanti yoga?
The coincidence of Krishna Ashtami with Rohini nakshatra — the exact combination at Krishna’s birth. Years with Jayanti yoga are considered especially meritorious for the fast. Whether it forms depends on the Moon’s star at midnight, which your local panchang will flag.
How is the fast observed?
A day-long fast (fruit/water for most households), Krishna abhisheka and puja during Nishita Kaal around midnight, often with bhajans and the rocking of the infant Krishna’s cradle. The fast is broken (parana) after the midnight puja or at next sunrise, by family custom. Dahi Handi follows the next day in Maharashtra.

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