Every kundali form asks the same three questions: date, place and time. Most people know the first two. The third is where families go quiet, or worse, where three relatives give three different answers. If that is you, you are in large company, and you have more options than guessing.
There are places to look that most people never think of. If they come up empty, a surprisingly large part of your chart does not need the time at all. And if you need the rest, there is a method for working the time out, with honest limits. Here is all of it, in the order worth trying.
First, work out what you actually know
"I don't know my birth time" covers very different situations, and the right next step depends on which one is yours:
| What you have | What it is good for |
|---|---|
| An exact time from a document | Everything, including the divisional charts |
| A time within about 15 minutes | Lagna, houses and dashas, unless the lagna sits near a sign edge |
| A part of the day: "early morning", "after lunch" | The Moon sign and planets; the lagna is a short list of possibilities |
| Only the date | The Moon sign on most days, every planet's sign, gochar from the Moon |
Write down what you have before you start, including how sure the person who told you was. A range you trust is worth more than an exact time someone half remembers.
Where to find your birth time
1. The hospital's own record. If you were born in a hospital or nursing home, the labour room register or the delivery notes almost always record the time to the minute. Ask the hospital's medical records department; you may need ID, your parents' names and the date. Old records are not always kept, but many hospitals hold them for decades.
2. Your birth certificate, and the register behind it. What the certificate shows depends on where you were born:
- India: the format varies by state and by year. Many certificates show the time; many older ones do not. When a hospital reports a birth, the registrar's original entry may hold more than the printed certificate, so it is worth asking the local registrar for the register entry, not only a copy of the certificate.
- United States: the long-form certificate, a full copy of the original record, usually includes the time of birth. The short-form abstract often leaves it out. Ask your state's vital records office for the long form.
- United Kingdom: certificates in England, Wales and Northern Ireland record the time only for twins and other multiple births. Scotland is the exception: Scottish registers record the time of every birth, back to 1855.
3. The janam patri made at your birth. Many families had a horoscope drawn up by a priest within days of a birth. Look for it among old papers. It may not show the time in hours and minutes at all, but as ishta kaal, the time elapsed since sunrise, in ghati and pal. One ghati is 24 minutes and one pal is 24 seconds, counted from that day's sunrise. A patri reading "ishta kaal 12 ghati 30 pal", on a day when the sun rose at 6:15 am, gives 12 × 24 = 288 minutes plus 30 × 24 seconds = 12 minutes: five hours after sunrise, 11:15 am. Priests sometimes used a ghati adjusted to the length of that particular day, so treat the result as close rather than exact, and check it against the sunrise for your birthplace on your birth date.
4. Papers your parents kept. A baby book, a diary, letters or telegrams sent to relatives, the hospital bill, a vaccination card. Births were news, and people wrote down when the news came.
5. Relatives, asked the right way. "What time was I born?" invites a guess. Questions tied to the events of that day get better answers: Was it still dark? Had the household eaten? Who went for the doctor, and when did they come back? What was on the radio or television? Was it before or after the evening aarti, the school run, a shift change? Ask each relative separately, write down every answer as a range, and see where the ranges overlap.
If you have a range, test both ends
Suppose the best you can establish is "between 7:30 and 8:30 am". Make two charts, one for each end of the range, and compare them:
- If the lagna is the same sign at both ends, you can read the houses with reasonable confidence.
- If the Moon's sign and nakshatra are the same at both ends, everything read from the Moon is safe.
- Whatever differs between the two charts is the part of your reading to hold loosely.
How much can change in an hour? We measured it on one real birth, 15 January 2000 in New Delhi, recalculated minute by minute: across the two hours from 7 to 9 am the Moon never left its sign or its nakshatra, the lagna stayed in one sign from 7:18 to 9:01 am, and the navamsa lagna changed ten times. The full tables are in our kundali calculation guide and our Lagna guide.
If you have no time at all: what still works
Much of a kundali does not depend on the hour.
Every planet except the Moon. Surya, Mangal, Budh, Guru, Shukra, Shani, Rahu and Ketu move so slowly that their signs are the same for the whole day, apart from the rare day one of them changes sign. Their dignity, their conjunctions with each other and the yogas they form between themselves are all readable.
The Moon sign, on most days. The Moon changes sign about every two and a quarter days. Counting every day from 2000 to 2009, it stayed in one sign from midnight to midnight on 56% of them. To check your own date, make one chart for 12:01 am and one for 11:59 pm: if both show the same Moon sign, your rashi is certain without a time.
Your rashifal, gochar and Sade Sati. All of these are counted from the Moon sign, not the lagna. If your Moon sign is certain, they apply to you exactly as they would with a perfect time.
The houses, counted from the Moon. When the lagna is unknown, astrologers traditionally read the chart from the Chandra lagna, treating the Moon's sign as the 1st house. It is a different lens from the true lagna, not a replacement, but it is a classical one.
What does not work without a time: the lagna and the houses counted from it, the divisional charts such as the Navamsa, and the dates of your dashas. The nakshatra is also usually uncertain: the Moon stayed in one nakshatra for a whole day on only 4% of the days we counted, so on most dates there are two candidates. That matters for your name syllable, for Guna Milan and for the order of your dashas, so check both.
Rectification: working the time out from your life
When the documents run out, astrologers use rectification. You give the dates of the major events of your life, and the astrologer tests candidate birth times against them, keeping the time whose dashas and transits fit those events best. The events that help most are ones with exact dates:
- your marriage
- the births of your children
- the deaths of your parents
- moves to another city or country
- serious accidents, surgeries or illnesses
- major changes of job or business
Be clear about what rectification can and cannot do. With a narrow starting range, a few documented events and a careful astrologer, it can settle which lagna you have and narrow the time to a useful window. It cannot reliably recover your birth time to the minute. Astrologers rectifying the same chart sometimes reach different answers, and a 2026 computational study of charts with known birth times found that the exact minute could not be recovered from life events. Treat a rectified time as a well-tested working assumption, and keep the evidence that produced it.
When you need an answer, not a chart
For one specific question, such as a decision you are facing now, Jyotish has a route that needs no birth time at all: prashna, the horary chart, cast for the moment the question is asked. It answers that question rather than describing your whole life, but it answers it without guessing at an hour you do not know.
How to use this site without a birth time
On the chart form, tick Time Unknown. Your chart is then cast for 12:00 noon on your birth date, the usual convention, and labelled as having no known time. Read it from the Moon sign and the planets' signs, check that the Moon's sign is the same at the start and the end of your birth date, and leave the lagna, houses and dasha dates aside until you have a time you trust. If you later find the time, edit the chart and everything recalculates.
Create your free Kundali to try it.
Common questions
Can I get a kundali without my birth time? Yes. The planets' signs, most yogas between planets and, on most dates, the Moon sign are all correct without a time. What you cannot rely on are the lagna, the houses, the divisional charts and the dasha dates.
Should I use a noon chart or a sunrise chart? Both are conventions, not answers. A noon chart keeps the Moon's position as close as possible to its average for the day, which is why it is the common default. A sunrise chart, with the Sun on the lagna, is sometimes used as a symbolic chart. Neither tells you your real lagna, so read either one from the Moon and the planets only.
Can I follow rashifal if I do not know my birth time? Yes, if your Moon sign is certain. Rashifal and gochar are counted from the Moon sign, which on most dates is the same all day. Check it by casting your chart for the first and last minute of your birth date.
Two relatives remember different times. Which should I use? Neither, until you have tested both. Make a chart for each and see what differs. If the lagna is the same in both, the disagreement may not matter. If it is not, look for a document, or ask each relative what else was happening at the time, and see which memory holds up.
How accurate is birth time rectification? Good enough to choose between two or three possible lagnas when it starts from a narrow range and several dated events. Not good enough to give a time to the minute. Use it as a working assumption, not a certainty.
Sources
- UK birth registration and the time of birth: National Records of Scotland, Statutory Register of Births.
- US long-form and short-form birth certificates: Missouri Department of Health, vital records FAQ, one example of how states describe the long form.
- Ghati and pal, and conversion from sunrise: Drik Panchang, Vedic time and Ishtakala.
- The limits of rectification: Computational Birth-Time Rectification, an empirical study.
- Moon sign and nakshatra statistics: our own count of every day from 1 January 2000 to 31 December 2009, Swiss Ephemeris, Lahiri ayanamsha, Indian Standard Time.
