Find your date of birth

तिथि, महिना, साल वा बारबाट सम्भावित जन्ममिति खोज्नुहोस्

Don't remember the exact date? Tell Patro what you remember, and we'll help you narrow down the possible dates.

1
Which year were you born?
A rough guess is fine - you can add a range.
How sure are you?
2
Which month?
Pick every month it could be. None picked = all months.
3
Which day of the week?
e.g. "My parents say I was born on a Saturday."
4
Do you know the tithi?
The lunar day families often recorded births by. Skip if unsure, results will show each date's tithi.
Paksha · पक्ष
Tithi · तिथि
5 Born near a holiday? optional

Only fixed-date holidays work, Dashain and Tihar move every year.

0 possible dates

About this tool

Why tithi-based dates?

Many people - especially older relatives - don't have a recorded date of birth, but remember the tithi (lunar day) they were born on, since tithis were traditionally used to mark births rather than the Gregorian or even Bikram Sambat date. Combined with a rough month and year, a tithi usually narrows a birth date down to just one or two candidate days.

This tool scans real astronomical tithi data (Sun-Moon longitude, tithi assigned by the tithi prevailing at sunrise in Kathmandu - the standard Panchang convention) for AD 1921-2043, and cross-checks each candidate against the same Patro calendar engine used elsewhere on this site.

Frequently Asked Questions

I don't know my exact date of birth. Can Patro help?

Yes. You don't need to know the exact date. If you remember an approximate year, month, weekday or a tithi, enter whatever you know and leave the rest blank - Patro searches for every date matching what you've given it, and shows the actual tithi for each match so you can narrow further from there.

What is a tithi?

A tithi is a lunar day in the Hindu/Nepali Panchang, defined as the time it takes for the angular distance between the Moon and Sun to increase by 12°. There are 30 tithis in a lunar month - 15 in Shukla Paksha (the waxing fortnight, ending in Purnima/full moon) and 15 in Krishna Paksha (the waning fortnight, ending in Amavasya/new moon).

Can I find my birth date if I only know the tithi?

Yes, though a tithi by itself (with no year at all) usually turns up too many matches to be useful, since it repeats roughly twice a month across the ~120 years of data covered here. Adding even a rough decade, paksha, or weekday narrows it down to a handful of candidates.

Why would a tithi help find a date of birth?

Before civil registration was common, many families recorded a birth by its tithi and rough season rather than an exact calendar date - it was how time was tracked culturally. A specific tithi within a specific paksha only lands on one or two Gregorian dates within any given lunar month, so combined with even a rough month/year, it narrows things down a lot.

How can I find the Gregorian date of a Nepali tithi?

Switch "Calendar system" to Gregorian (AD) instead of Bikram Sambat before picking a birth month - Patro then searches directly against AD months and years. Every result already shows the matching date in both calendars side by side, either way.

How can I find an old Nepali date of birth?

The same search works for old dates too - the tithi data here covers roughly AD 1921-2043 (see the "Data covers" note above the year field for the exact BS/AD range). This is especially useful for older relatives whose birth was recorded by tithi and season rather than a written date.

Why do I sometimes get two candidate dates for the same month?

Because tithis are slightly shorter than a solar day on average, a tithi can occasionally span two sunrises (called adhik tithi) or get skipped entirely between two sunrises (called kshaya tithi). Near these boundary cases, different Panchangs can genuinely disagree by a day - that's expected, not an error, which is exactly why this tool shows every matching candidate instead of picking just one.

How accurate is this?

Tithi is computed from the real apparent geocentric longitudes of the Sun and Moon, referenced to sunrise in Kathmandu - the standard convention Nepali Panchangs use. It isn't hand-approximated; the same astronomical method professional Panchang calculators use is used here, for AD 1921 through 2043.

What if I get too many results?

Try narrowing the year (or switching from "Around this year" to a smaller range, or to "Exactly this year"), picking fewer candidate months, or selecting a nearby fixed-date holiday if you remember the birth being close to one - each narrows the list further.