This Janam Tithi Calculator is a Hindu birth date calculator: enter your English date of birth, time and place, and it converts them to the Hindu calendar — the tithi and paksha you were born in, the Hindu month, Vikram and Shaka Samvat, the Hindu weekday, nakshatra and yoga. It also gives the next three English dates of your Hindu birthday by tithi.
What is a janam tithi?
The Gregorian calendar follows the Sun, but the Hindu panchang identifies a day by its tithi, which depends on the angle between the Moon and the Sun. At Amavasya they are together; each time the Moon moves another 12° ahead of the Sun, one tithi is completed. A full 360° cycle therefore has 30 tithis — 15 in Shukla paksha (waxing Moon) and 15 in Krishna paksha (waning Moon). The tithi running at the moment you were born is your janam tithi.
Because the Moon’s speed varies, a tithi can last from about 20 hours to more than 26 hours. So one English day can contain two tithis, and occasionally a tithi begins and ends without touching any sunrise.
What the calculator shows
Enter your date of birth, place, and time if you know it — if not, the tool uses 12 noon. The result includes:
- Tithi at birth with its paksha, e.g. “Shukla Saptami” or “Krishna Ekadashi”.
- Hindu month in both systems — purnimanta (north India) and amanta (south and west India) — and whether it was an Adhik maas.
- Vikram Samvat and Shaka Samvat year of birth.
- Hindu weekday (vaar): the vaar changes at sunrise, not midnight, so a person born before sunrise belongs to the previous day’s vaar. The tool shows this clearly.
- Nakshatra and yoga at birth, and the sunrise time on that day.
- Next 3 Hindu birthdays: the Gregorian dates when the same tithi in the same lunar month comes again.
Born before sunrise? Your vaar may differ
Suppose a child is born at 4:30 am on a Tuesday and sunrise that day is at 6:15. By the clock it is Tuesday, but in the panchang Monday’s vaar is still running until sunrise, so the Hindu weekday is Monday. The tithi of a “day” is likewise the one running at sunrise, while your birth tithi is the one running at the exact moment of birth — the tool keeps the two apart.
Purnimanta and amanta months
In the purnimanta system, used in north India, a month ends on Purnima. In the amanta system, used in states such as Maharashtra, Gujarat, Karnataka, Andhra Pradesh and Telangana, it ends on Amavasya. In Shukla paksha both give the same month name; in Krishna paksha the purnimanta name is one month ahead.
| Day | Purnimanta | Amanta |
|---|---|---|
| Janmashtami | Bhadrapad Krishna Ashtami | Shravan Krishna Ashtami |
| Karwa Chauth | Kartik Krishna Chaturthi | Ashwin Krishna Chaturthi |
| Ram Navami | Chaitra Shukla Navami | Chaitra Shukla Navami |
The tithi and the day are the same — only the month’s name changes — so the tool shows both.
Why your tithi birthday moves every year
Twelve lunar months add up to about 354 days, roughly 11 days short of the solar year. To keep the calendar in step with the seasons, an extra month — Adhik maas — is added about every 32–33 months. As a result your tithi birthday falls about 11 days earlier in some years and jumps later after an Adhik maas, staying within roughly the same month-long window.
The tool therefore works out your next three Hindu birthdays directly. The birthday is observed on the day whose sunrise tithi matches your birth tithi; if that tithi does not touch any sunrise (a kshaya tithi), it is observed on the day the tithi begins.
Born in an Adhik maas?
An Adhik maas (also called Malmas or Purushottam maas) is a lunar month in which the Sun does not change sign. It does not come every year, and the same named Adhik month may not return for many years. So by tradition, someone born in an Adhik month celebrates the tithi birthday each year in the regular (nija) month of the same name — for example, born on Adhik Jyeshtha Shukla Panchami, celebrated on Jyeshtha Shukla Panchami every year.
Samvat, nakshatra and yoga
- Vikram Samvat is 57 years ahead of the Gregorian year from Chaitra Shukla Pratipada onward (56 before it). In Gujarat the new Samvat begins the day after Diwali, so the year can differ by one for a few months.
- Shaka Samvat is 78 years behind the Gregorian year (79 before the new year begins).
- Nakshatra is the one of 27 equal sectors (13°20′ each) the Moon was in at birth — see the nakshatra calculator for pada and name letters.
- Yoga is one of 27 divisions based on the sum of the Sun’s and Moon’s longitudes.
Celebrating a birthday by tithi
Many families celebrate both the English birthday and the tithi birthday. Customs vary, but common ones are a morning bath and puja to the family or chosen deity, a temple visit, touching the feet of elders for their blessings, and giving food or clothes to those in need. There are no strict rules — the idea is simply to give thanks and receive the family’s blessings. For a full birth chart, make your kundli, and for any day’s tithi see the daily panchang.
Frequently asked questions
How do I find my janam tithi?
Enter your date, time and place of birth in the calculator above. It shows the tithi and paksha at the moment of birth, along with the Hindu month, Samvat, vaar, nakshatra and yoga.
How do I convert an English date to a Hindu tithi?
A tithi is based on the angle between the Moon and the Sun, with one tithi for every 12°. The calculator works out both positions for your date and time and gives the correct tithi.
What if I don't know my birth time?
Leave it blank and the tool uses 12 noon. If the tithi changed that day the result could be the neighbouring tithi, so enter the time if you know it.
Why does my Hindu birthday fall on a different date every year?
Twelve lunar months make about 354 days, roughly 11 days shorter than the solar year, and an Adhik maas is added every 32–33 months. So the tithi birthday shifts each year; the tool lists the next three dates.
On which day is the tithi birthday celebrated?
On the day whose sunrise tithi matches your birth tithi. If the tithi touches no sunrise (kshaya tithi), it is observed on the day the tithi begins.
What weekday is it if I was born before sunrise?
In the panchang the vaar changes at sunrise, so a birth before sunrise belongs to the previous day’s vaar. A birth at 4 am on Tuesday before sunrise counts as Monday.
What is the difference between purnimanta and amanta months?
Purnimanta months end on Purnima and amanta months end on Amavasya. In Shukla paksha the names match; in Krishna paksha the purnimanta name is one month ahead. The tool shows both.
I was born in Adhik maas. When is my Hindu birthday?
By tradition it is celebrated every year on the same tithi in the regular (nija) month of the same name, because the Adhik month does not come every year.
How is Vikram Samvat calculated?
From Chaitra Shukla Pratipada onward, Vikram Samvat is the Gregorian year plus 57; before that it is plus 56. The tool shows both Vikram and Shaka Samvat.
Can one day have two tithis?
Yes. A tithi lasts roughly 20 to over 26 hours and can change at any time of day, so the birth time matters.
What is a kshaya tithi?
A tithi that begins and ends between two sunrises without touching either is called kshaya. A birthday on such a tithi is observed on the day it begins.
What is the difference between tithi and nakshatra?
Tithi depends on the Moon–Sun angle, while nakshatra is the one of 27 sky sectors the Moon is in. The tool shows both.
Is the tithi different in north and south Indian calendars?
No, the tithi and the day are the same. Only the month name in Krishna paksha differs between purnimanta and amanta systems.
How is a birthday by tithi traditionally celebrated?
Common customs are a morning puja, a temple visit, elders’ blessings and giving food or clothes to those in need. Practices vary from family to family.
Does the calculator work for births outside India?
Yes. Choosing the birth place sets that location’s time zone and sunrise, so the tithi and vaar are correct for births abroad too.