Why is the same day called Bhadrapada in North India but Shravana in South India?

North India uses the Purnimanta month convention (month ends at Purnima); South/West India uses Amanta (month ends at Amavasya) — the same Gregorian day genuinely falls in different lunar months under each scheme.

Why does the date use the Sun's Rashi instead of just the Tithi?

Krishna Ashtami recurs roughly every lunar month, so a Tithi-only search can match the wrong month in an Adhik Maas year — checking the Sun's Rashi (Simha/Leo) pins down the correct Bhadrapada occurrence.

How accurate is this calculation?

Verified against a real, independently-published 2026 date for this exact Tithi/Rashi combination — an earlier internal draft of this tool's underlying data had the wrong date until this cross-check caught it.

A tradition (especially in Maharashtra) reenacting young Krishna's butter theft, held the day after Janmashtami, involving human pyramids breaking a suspended pot of curd.

Does this calculator work for past or future years?

Yes — enter any Gregorian year to find that year's calculated date.

Why might my local temple's date differ from this calculator by a day?

This tool uses a fixed midday reference instant, not the exact moment of the Tithi transition — a date very close to that boundary can differ by a day from a Panchang using sunrise- or midnight-based determination.

Does Janmashtami always fall in August?

Usually late August or early September, but in a year with an Adhik Maas inserted earlier in the calendar, it can fall notably later, as in 2026.

Janmashtami Date Calculator

About the Janmashtami Date Calculator

Calculates the date of Krishna Janmashtami, the celebration of Lord Krishna's birth, for any Gregorian year.

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How to use it

Enter a Gregorian year.
Read the calculated date of Krishna Janmashtami.

Formula

Janmashtami falls on Bhadrapada Krishna Ashtami (8th Tithi of Krishna Paksha, Purnimanta reckoning) — found by searching for the date whose Tithi is Krishna Ashtami AND whose Sun sidereal Rashi is Simha (Leo), the second condition needed to correctly disambiguate the right month's occurrence in an Adhik Maas (leap month) year.

Worked example

Janmashtami 2026 is calculated as 4 September (Friday).

Amanta vs. Purnimanta month for Janmashtami

Amanta vs. Purnimanta month for Janmashtami
Convention	Region	Month name
Purnimanta	North India	Bhadrapada
Amanta	South/West India (e.g. Tamil Nadu, Karnataka, Gujarat, Maharashtra)	Shravana

Interpreting your result

This is a calculated approximation using a fixed India Standard Time midday reference — real observance is traditionally tied to the moment Ashtami Tithi overlaps midnight (Krishna's traditional birth hour), which can shift the observed date by a day in some years or regions from this tool's midday-based calculation.

Recommendations

• Some traditions (notably ISKCON and certain regional communities) observe Janmashtami a day later than others depending on which Tithi is active at local midnight — check your community's specific convention.

Frequently asked questions

Because the exact moment Ashtami Tithi overlaps midnight (Krishna's traditional birth hour) varies, some traditions (like ISKCON, which uses a Vaishnava-specific rule) can observe it a day apart from mainstream Panchang-based dates.

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