Krishna was born, by tradition, at midnight on Krishna-paksha Ashtami of Bhadrapada (Shravana in the purnimanta calendar), with the Moon in Rohini nakshatra in Taurus. When a year’s Janmashtami has Ashtami and Rohini together at midnight, it is called Jayanti yoga — the most auspicious form of the festival. In many years the two do not coincide, which is why Smarta and Vaishnava dates can differ.
How the yoga forms
- Ashtami at nishita (midnight): the core requirement for Janmashtami.
- Rohini nakshatra at the same time: together with Ashtami this is Jayanti yoga.
- Weekday: Jayanti yoga on a Monday or Wednesday is traditionally praised as especially rare.
Planetary “Gajakesari” or “Hamsa” yogas on the day are general sky patterns, not the yogas that tradition links with Janmashtami.
How to check a given year
- Find when Krishna Ashtami runs in Bhadrapada (amanta) and whether it covers midnight in your city.
- Check whether the Moon is in Rohini at that midnight.
- If both: Jayanti yoga. If Ashtami is at midnight but Rohini falls the next night, Smarta households usually observe the Ashtami night and many Vaishnava traditions the next day.
For this year’s and next year’s dates, see Janmashtami 2026 and Janmashtami 2027.
Observance
- Fast from the morning; worship of Bal Gopal at midnight with panchamrit abhishek, cradle (jhula) and bhog.
- Chant “Om Namo Bhagavate Vasudevaya” or read the birth episode of the Bhagavata.
- Break the fast after midnight puja or the next morning, as per family tradition.
- Charity of food and clothes, and service to cows, are traditional.
Check it in your own chart
Yogas are read together with planetary strength, the houses ruled for your lagna and the running dasha. A free kundli shows these placements; the yoga finder lists common yogas. For a full reading, book a consultation.
Frequently asked questions
What is Jayanti yoga on Janmashtami?
Krishna Ashtami and Rohini nakshatra together at midnight — the most auspicious form of Janmashtami.
Why are there two Janmashtami dates in some years?
Smarta practice follows Ashtami at midnight; many Vaishnava traditions prefer the day with Rohini or Ashtami at sunrise, which can be the next day.
In which nakshatra was Krishna born?
Rohini, by tradition, with the Moon in Taurus.
Are Gajakesari or Hamsa yogas part of Janmashtami?
No. Those are birth-chart yogas; tradition links Janmashtami with Ashtami, Rohini and midnight.
What mantra is chanted on Janmashtami?
“Om Namo Bhagavate Vasudevaya” is the most common.
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Book a Consultation · ₹5,100 WhatsApp Dr. SharmaThis article is offered as general guidance in the Vedic tradition. Astrology is a tool for reflection and is not a substitute for professional medical, legal or financial advice.
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