When is my Telugu birthday?

Your Telugu birthday isn't the Gregorian date on your passport. It's a tithi, a particular phase of the moon, in a particular Telugu month. Finding the day it falls on each year takes real astronomy. Here's how it works, and how to find yours in seconds.

A Telugu birthday is a tithi, not a calendar square

The Telugu calendar is lunisolar. A birthday is recorded as the tithi (lunar day) and paksha (the waxing Shukla or waning Krishna fortnight) within a Telugu masa (month). For example, Shukla Navami of Chaitra masa. The moon, not the Gregorian grid, decides when that recurs.

Why your Telugu birthday drifts every year

The lunar cycle is about 29.5 days, so a Telugu month and the Gregorian month never line up perfectly. Each year your tithi lands on a slightly different Gregorian date. It usually drifts earlier, then jumps forward when an adhika masa (an extra leap month) is inserted to keep the lunar and solar years in step. That's why the English date of your birthday moves around, and why a fixed reminder in your phone's calendar is always a little bit wrong.

Why it can differ by city, and matters most abroad

The day a tithi "counts" is decided by the tithi present at local sunrise. Sunrise happens at a different clock time in San Jose than in Hyderabad, so a tithi that is present at sunrise in India may have already ended, or not yet begun, at sunrise in the US. So your Telugu birthday can land on a different Gregorian day in the United States than it does back home.

This is exactly the problem for NRI families. Generic Telugu calendars and panchangams print the India dates. If you celebrate Amma's, Nanna's, Ammamma's, or Tatayya's birthday from Dallas, the Bay Area, New Jersey, Atlanta, Chicago, or Seattle, you want your date, the one decided by sunrise where you actually are.

How to find your Telugu birthday

Traditionally you'd ask a priest or read a panchangam by hand. Sampangi does the astronomy for you:

• Enter a person's Gregorian birth date (and time, if you know it).
• Set the place where you'll celebrate, your US city.
• Sampangi computes the Sun and Moon positions with sidereal (Lahiri) astronomy, finds the tithi at local sunrise, and returns the exact Gregorian day in any year when the same masa, paksha, and tithi recur for your location.

Telugu birthday FAQs

What's the difference between a Telugu birthday and a nakshatra birthday?

Some families celebrate the janma nakshatra (the moon's star) instead of the tithi. Sampangi is a tithi-based birthday tool, the most common Telugu reckoning, and also shows the nakshatra for reference each day.

Can my Telugu birthday be on a different day than my cousin in India?

Yes, and that's expected. Because local sunrise decides the date, the same tithi birthday can fall a day apart between the US and India. Sampangi shows you the date for the place you choose.

Do I need to know my exact birth time?

No. A birth date is enough to find your tithi birthday. If you do know the birth time, Sampangi can use it to resolve rare boundary cases more precisely.

Want the background? Read what a tithi is, or see Telugu festival dates for 2026.

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