Enter your date of birth and get your sidereal sun sign with its exact degree, nakshatra and pada. You also get your western sun sign and the ayanamsha gap between them, because the two usually differ by one sign and almost no page explains why.
Guna Milan reads both Sun charts — the birth-star, the sign and the quarter within it produce the eight tests and your total out of 36. Your own scores are in the free result above; the rule behind each one, and what it means day to day, is in the full report.
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Both Sun charts are read and each of the eight tests gets its own score out of 36 — with the rule that produced it printed beside it.
Manglik, Nadi and Bhakoot are checked for both of you — and every classical exception is computed on your own charts, never assumed.
Where a score came out low, you get the fix: what to do, what to avoid, and the dates when your chart support a wedding.
Your own scores are free, above. The rule behind each one, the exceptions, and the dated windows are in the full report.
Almost everybody who uses this calculator arrives with the same question, so let us answer it before anything else. If you have been told your whole life that you are a Leo, and this page says Cancer, nothing has gone wrong. You have just met the difference between two zodiacs, and both of them are internally consistent.
Western astrology uses the tropical zodiac. It begins at the spring equinox - the moment each March when the Sun crosses the celestial equator and day equals night. Aries starts there by definition. It is a seasonal marker: the tropical zodiac is anchored to the Earth's relationship with the Sun, not to the stars.
Vedic astrology uses the sidereal zodiac. It begins from the fixed stars - Aries starts where the constellation of Aries begins. It is anchored to the sky itself.
Around two thousand years ago, these two starting points coincided. The equinox fell in the constellation of Aries, and a tropical chart and a sidereal chart would have agreed. They no longer do.
The Earth does not spin perfectly upright. Its axis traces a slow circle, like a spinning top wobbling, over a cycle of roughly 26,000 years. Because of that wobble, the position of the equinox creeps backwards against the background of stars - about fifty seconds of arc every year. Fifty seconds sounds like nothing. Over two thousand years it accumulates to roughly twenty-four degrees.
That accumulated gap is called the ayanamsha. The word means the portion (amsha) of the solstitial movement (ayana). It is not an opinion or a correction factor invented by astrologers; it is a measured astronomical quantity, and you can look up its current value in any ephemeris.
Since a zodiac sign is thirty degrees wide, and the gap is twenty-four, the sidereal position of any planet sits roughly four-fifths of a sign behind its tropical position. For most birthdays that means your Vedic sun sign is the sign before your western one. If your birthday falls in roughly the first three weeks of a western sign, expect the previous sign here. If it falls in the last week or so, the two may agree.
This is the question people want settled, and the honest answer is that it is not the right question. The two systems measure from different origins and each is consistent within itself. A tropical chart read by tropical rules is complete; a sidereal chart read by sidereal rules is complete. They disagree because they start from different places, not because one of them contains an arithmetic error.
What would be an error is mixing them - taking a sidereal position and reading it with tropical meanings, or the reverse. That happens more often than it should, usually on pages that convert a sign without converting the interpretation with it.
We print both signs and the gap between them, so that you can see the difference as a number rather than wondering whether somebody has made a mistake.
In the west, "what's your sign" means the Sun. Newspaper columns are sun-sign columns. The entire popular culture of astrology in English is built on the Sun.
Indian astrology does not work that way. When someone in India asks your rashi, they almost always mean your Moon sign - the sign the Moon occupied at your birth. That is not a minor preference; it runs through the whole system:
So what is the Sun read for? Authority, standing, vitality, the father, and the sense of self that a person presents to the world. It is one of the three references a chart is counted from - the ascendant, the Moon and the Sun - and it is genuinely important. It simply is not the single headline figure that a western horoscope column makes it.
We say this on a sun sign page, knowing it makes the page sound less exciting, because it is true and because you will be better served knowing it.
Usually not. The Sun takes about thirty days to cross a sign, moving roughly one degree per day. So your date of birth settles your sun sign in almost every case.
The exception is being born on a day the Sun changed sign - a sankranti. On those days the sign depends on the time, and the change can happen at any hour. This page checks for that and tells you if it applies to you, rather than quietly picking one and hoping.
Birth time does matter for other things on this page - your ascendant and your house positions need it - but for the sun sign itself, the date is almost always enough.
Most sun sign pages give you a sign and stop. We print the degree because it carries real information.
A Sun at 0 degrees of a sign has just arrived; a Sun at 29 degrees is about to leave. In classical terms the last degree of a sign is sometimes read differently from the middle of it, and a Sun sitting there means a birth time or even a date recorded slightly wrong could place you elsewhere. Rounding both to the same sign name hides that entirely.
The degree also fixes your Sun's nakshatra and pada - which division of twenty-seven it occupied, and which quarter of that division. Almost no sun-sign calculator gives you this, and it is a more specific piece of information than the sign itself.
The Sun entering a sidereal sign is called a sankranti, and the most famous of them is Makar Sankranti - the Sun entering Capricorn, celebrated around 14 or 15 January every year.
Here is something worth noticing. Most Hindu festivals are lunar and their Gregorian dates swing by weeks. Makar Sankranti barely moves - a day either way. That is because it is a solar event, tied to the Sun's sidereal position rather than to a lunar month.
And there is a slow drift hidden in it: because of precession, Makar Sankranti creeps forward by about one day every seventy years. Ancient texts place the winter solstice at the Capricorn ingress; today they are around twenty-three days apart. The same precession that separates the two zodiacs is visible in a festival date - which is a useful reminder that the ayanamsha is an astronomical fact rather than an astrological convention.
We use Lahiri - formally the Chitrapaksha ayanamsha - which is the Indian government standard, adopted by the Calendar Reform Committee in the 1950s and used by the national ephemeris. It is what the overwhelming majority of Indian astrologers use.
Other ayanamshas exist: Raman, Krishnamurti (KP), Fagan-Bradley and others. They differ from Lahiri by roughly one to two degrees. For most birthdays that changes nothing at all. For a birth within a degree or two of a sign boundary, it can change the sign - which is exactly why this page prints your exact degree rather than just the name.
If your sun sign here differs from another Vedic site, the ayanamsha is the first thing to compare, and the degree will tell you immediately whether you are in the borderline zone where it could matter.
It will not tell you your personality from your sun sign. Twelve descriptions cannot cover everybody, and a sun sign is one factor out of many in a chart that has nine planets, twelve houses, an ascendant and a set of periods running through it.
It will not sell you a report on your sun sign either, because a sun sign is one figure and a figure does not honestly fill a report. What we give you here is the computation, printed so you can check it, with the context that makes it mean something.
The exact sidereal longitude of the Sun at your birth, the sign it falls in, how many degrees into that sign it sits, and which nakshatra and pada that degree belongs to. If the Sun was within a degree of a sign boundary, the page says so rather than letting you assume the answer is solid.
Your sidereal sign and your tropical sign printed together with the ayanamsha gap between them. Seeing the two as figures rather than as competing claims is what makes the difference stop being confusing.
The Earth's axis tracing a circle over roughly 26,000 years, the equinox slipping backwards by about fifty seconds of arc a year, and how that adds up to the twenty-four degree gap between two systems that once agreed. An astronomical fact with an astrological consequence.
What each sign covers in sidereal terms, its ruling planet, its element and its classical nature - set out so your sign can be placed against the other eleven rather than read on its own.
What the Sun is read for in Vedic astrology - authority, standing, the father - and why the Moon carries the dasha, the matching and the Saturn transits. The single most useful thing to understand about how this tradition differs from the western one.
The Sun entering a sidereal sign, why Makar Sankranti sits on almost the same date every year when other Hindu festivals swing by weeks, and the slow precessional drift visible inside it.
Lahiri, Raman, Krishnamurti and the others, how far apart they sit, and the narrow band near a sign boundary where the choice changes your answer. With your own degree, so you can see whether you are in that band.
Swiss Ephemeris + Lahiri ayanamsa — the same standard as traditional panchangs. Both Suns computed from real birth details and real coordinates, never guessed from a name.
Every score prints the classical rule that produced it, right beside the number. Any astrologer can check our working line by line.
A dosha is a signal to check, never a verdict on two people. We compute the classical exceptions on your own charts and state every remedy with its honest limit.
The Hindi report is written natively — not machine-translated. English and Hindi carry the same free depth, chapter for chapter.
Date, time and place — the Sun sign is the anchor, and time makes it certain.
Swiss Ephemeris (Lahiri sidereal) tracks the Sun through the 12th, 1st and 2nd signs from your Sun — day-level, your chart checked together.
See your score, timeline and end date free; unlock the verdict, life-area guidance and remedies.
This sun sign calculator by date of birth answers the six questions people search most — vedic sun sign calculator, sun sign and moon sign calculator, sidereal sun sign by date of birth, sun sign by birth date and time, surya rashi kaise pata kare — each with the rule behind it. The sun sign calculator by date of birth above computes your own result free; the sections below explain what it means, and a sun sign calculator by date of birth that shows its working is one you can check against any astrologer.
A sun sign calculator by date of birth in the Vedic system places the Sun in the sidereal zodiac, about 24 degrees behind the Western one, so a person born on 5 August is a Leo in the West and usually a Cancer (Karka) in the Vedic chart. This sun sign calculator by date of birth prints the Sun's exact degree, its house from the lagna when the time is given, and its dignity — because the Sun's house says far more than its sign about authority, health and the father.
A vedic sun sign calculator uses sidereal sign dates that shift: Aries runs roughly 14 April to 14 May, Taurus 15 May to 15 June, and so on, moving a day or so over the years and changing at a different hour each year. That is why a table is never exact for a birth near the 14th–16th of a month. This vedic sun sign calculator computes the Sun's position for the actual date and year rather than reading a table, and prints the boundary when a birth sits on one.
A sun sign and moon sign calculator shows the two signs the chart is built from: the Sun for the self, authority, father and vitality; the Moon for the mind, mother and daily life. When they share an element the person is consistent; when they clash (a fire Sun with a water Moon) the will and the feelings pull apart, and that tension is the person's work. This sun sign and moon sign calculator prints both with their lords and houses, and notes the lagna as the third pillar.
Sidereal sun sign by date of birth differs from the tropical one because the two zodiacs have drifted apart by about 24 degrees since they coincided around 285 CE — the precession the ayanamsa corrects for. Neither is wrong; they measure from different zero points. Sidereal sun sign by date of birth on this page uses Lahiri, prints the ayanamsa value used, and shows the Western sign beside the Vedic one so nobody thinks the calculator has made a mistake.
Sun sign by birth date and time adds the one thing a date alone cannot: the house. The Sun in the 10th is a public life; in the 12th a private one; in the 6th a life of service or of fighting. With the time, the Sun's house is computed from the lagna and its aspects are read. Sun sign by birth date and time on this page prints the house, the dignity (exalted in Aries, debilitated in Libra, own in Leo) and the Sun's nakshatra.
Surya rashi kaise pata kare is simple: enter the date above and the sidereal Sun sign is computed, with the degree. Surya rashi kaise pata kare is often asked by people who expected it to match their janam rashi — it rarely does, because the Moon moves through all twelve signs every month while the Sun takes a year. Both are printed here, so the two most-confused signs in Indian astrology sit side by side with their meanings.
If you came to this sun sign calculator by date of birth to check a result from another app, compare the degree, not just the sign — two tools using different ayanamsas will disagree by about a sign near boundaries. This sun sign calculator by date of birth prints Lahiri, the value used, and every intermediate step, so the sun sign calculator by date of birth result can be verified line by line.
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Every AstroMool reading is generated from your exact birth chart using the Swiss Ephemeris and classical Parashari & Jaimini principles, then reviewed for accuracy — no generic templates, no guesswork. Last updated: September 2026
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