Taurus Birth Chart Calculator
Taurus season runs from April 20 to May 20, and if your birthday falls inside it, the Sun was in Taurus when you were born. But a birth chart is more than a sun sign. This calculator finds your full Big Three, Sun, Moon and rising, using real astronomical formulas: the Sun’s true ecliptic longitude, a simplified lunar theory for the Moon, and the standard ascendant equation for the rising sign. Born May 5, 1990 at 2:30 PM in New York? That is Sun in Taurus, Moon in Libra, Rising in Virgo.
| Sun sign | – |
| Moon sign | – |
| Rising sign | – |
| Sun longitude | – |
| Moon longitude | – |
| Rising longitude | – |
| Element | – |
| Ruling planet | – |
Sun sign comes from birth date alone and is exact. Moon and rising shift every couple of hours, which is why birth time matters so much.
Quick Answer
Born May 5, 1990 at 2:30 PM in New York, your Big Three are Sun in Taurus 15.04°, Moon in Libra 0.90°, Rising in Virgo 22.78°. The Sun’s sign comes from your birth date alone; the Moon and rising are computed from your exact birth time and place with real astronomical formulas, and the calculator above is pre-filled with this example so you can verify it in one click.
Key takeaways
- A birth chart’s Big Three are the sun sign (core identity, fixed by birth date), the moon sign (emotional nature, changes sign roughly every 2.5 days) and the rising sign (first impression, changes roughly every 2 hours). Most people recognize themselves in a blend of all three, not the sun sign alone.
- This tool computes genuine positions, not date arithmetic: the Sun’s true ecliptic longitude, the Moon’s longitude from a simplified lunar theory, and the rising sign from the standard ascendant formula. An earlier version of this page used placeholder formulas; the math below replaced them.
- Two honest limits: the ascendant uses local mean solar time from your longitude (civil time zones can shift it up to about an hour), and a full natal chart with all ten planets and houses needs a true ephemeris engine such as astro.com or astro-seek.com.
- Astrology is a symbolic tradition, not an empirical science. Use the chart for reflection and entertainment, never for health, financial or relationship decisions.
- Quick Answer
- How to use the Taurus birth chart calculator
- How the tool computes your signs (no fake astronomy)
- Worked example: May 5, 1990, 2:30 PM in New York
- Your Big Three: what sun, moon and rising each describe
- Taurus sun: the fixed earth sign
- Natal chart vs rising-sign-only: which one do you need?
- What other Taurus chart calculators leave out
- Frequently asked questions
- Add This Calculator to Your Website
How to use the Taurus birth chart calculator
Four fields, one click. The results stay hidden until you calculate, and the May 1990 New York example is already filled in.
- Enter your birth date: the calendar day you were born. This alone determines your sun sign, and it is exact.
- Enter your birth time: as precisely as you know it, ideally from a birth certificate. The moon and rising move fast enough that a few hours can change both.
- Enter the latitude and longitude of your birthplace: decimal degrees, for example 40.7128 and -74.006 for New York. These feed the ascendant calculation and set your local mean solar time.
- Click Calculate my chart: the Big Three appear with the sun sign large, plus Taurus’s element (Earth) and ruling planet (Venus). Copy or share the result with the buttons underneath.
Blank or impossible entries are rejected plainly: “Enter your birth date.”, “Enter your birth time.”, “Enter a latitude.”, “Enter a longitude.”, and range checks (“Latitude must be between -90 and 90.”, “Longitude must be between -180 and 180.”). Reset restores the worked example.
How the tool computes your signs (no fake astronomy)
Every placement on this page is a real astronomical computation, simplified enough to run in a browser. Here is exactly what happens when you click Calculate.
- Sun sign: the tool computes the Sun’s true ecliptic longitude from standard orbital elements and reads the 30° segment it falls in. April 20 to May 20 maps to 30°–60°, Taurus. Cusp birthdays can fall either side depending on the year, because the exact ingress moment shifts; the computation handles that automatically.
- Moon sign: the tool runs a simplified lunar theory, the same family of low-precision formulas amateur astronomers have used since Paul Schlyter published them, including the major perturbation terms (evection, variation, yearly equation). It lands typically within about half a degree of ephemeris values, far inside the 30° sign boundaries.
- Rising sign: the tool uses the standard ascendant formula, the intersection of the eastern horizon with the ecliptic, from Greenwich sidereal time plus your longitude and latitude. This is the same formula our dedicated Taurus rising sign calculator uses.
The simplifications are disclosed, not hidden. Your birth time is read as local mean solar time from longitude, so political time zones and daylight saving can move the ascendant by up to about an hour near zone edges; the Moon is unaffected at this scale. The tool does not compute houses, aspects or the other seven planets, which is why a full professional-style reading still belongs on an ephemeris engine.
Worked example: May 5, 1990, 2:30 PM in New York
The calculator opens with this birth data pre-filled. One click gives Sun Taurus 15.04°, Moon Libra 0.90°, Rising Virgo 22.78°, and here is what the Big Three reading looks like for this chart.
| Placement | Result | What it describes |
|---|---|---|
| Sun | Taurus 15.04° | Core identity: steady, patient, comfort-loving. Fixed by the birth date; May 5 sits deep in Taurus season. |
| Moon | Libra 0.90° | Emotional nature: harmony-seeking, diplomatic, uncomfortable with conflict. The Moon moves fast, so the 2:30 PM time is doing real work here. |
| Rising | Virgo 22.78° | First impression: precise, observant, service-oriented. Set by the exact birth moment and the New York coordinates. |
| Element / Ruler | Earth / Venus | Taurus’s traditional element and ruling planet in Western astrology. |
Change only the birth time to midnight and the chart shifts: the Moon moves to Virgo and the rising to Capricorn, while the Taurus Sun stays put. That sensitivity is exactly why the tool asks for time and place, and why any moon or rising figure computed without them is a guess.
Your Big Three: what sun, moon and rising each describe
Astrologers read a chart through three headline placements, and they answer different questions about a person. In traditional astrology:
Sun sign: who you are
Core identity and purpose, fixed by birth date alone. The part of the chart that never needs a birth time. For this page’s audience: Taurus, April 20 to May 20.
Moon sign: how you feel
Emotional nature and instincts. The Moon orbits Earth in about 27 days, so it changes sign roughly every 2.5 days, and only an exact birth time pins it down.
Rising sign: how you come across
The face you show the world and the first impression you make. It is the zodiac sign on the eastern horizon at your birth moment, cycling through all twelve roughly every 24 hours.
Take these as archetypes for reflection, not predictions. A double-blind study published in Nature had astrologers match natal charts to personality profiles and found they performed at the level of chance, which is why this page treats the whole exercise as entertainment.
Taurus sun: the fixed earth sign
Taurus is the second sign of the zodiac, a fixed earth sign ruled by Venus in the traditional scheme. The stereotype, for what it is worth as an archetype: dependable and patient, sensual and comfort-loving, stubborn when pushed. Taurus season’s steadiness is the whole reason this page exists as its own calculator rather than a generic chart tool.
If you were born on April 19 you are Aries; on May 21, Gemini. The cusp days can vary by a day depending on the year, so if your birthday sits right on the boundary, the calculator’s computed sun sign settles it better than any date table.
Natal chart vs rising-sign-only: which one do you need?
This page computes the Big Three together, which suits anyone exploring a Taurus sun’s full picture. But the two tools answer different questions, and picking the right one matters.
- Use this Taurus birth chart calculator when you want sun, moon and rising together, for yourself or for comparing two Taurus-born people whose charts diverge after the sun sign.
- Use the Taurus rising sign calculator when the rising sign is the whole question. It goes deeper on the ascendant alone: city presets with time zones, an “unknown birth time” option, and the exact ascendant degree.
- Browse all twelve in the rising signs calculator when you want the general rising-sign reference rather than the Taurus angle.
- Try the sidereal birth chart calculator if you follow Vedic (Jyotish) astrology, which uses the sidereal zodiac corrected for precession rather than the tropical zodiac this page uses. Your signs can shift by almost a full sign between the two systems.
What other Taurus chart calculators leave out
Birth chart tools fall into two camps, and each leaves something on the table:
- Full ephemeris charts (astro.com, astro-seek, natalchartonline): genuinely precise, all planets, houses and aspects. The trade-off is complexity and accounts: they are built for astrologers, not for someone who wants their Taurus Big Three in ten seconds.
- Simplified Big-Three tools (welovehoroscope, owncalculator, toolnova): fast and friendly, but most never say how the positions are computed, and some use undisclosed approximations. A moon sign presented without a method is a guess wearing a lab coat.
- Date-only “birth chart” pages (cosmictools-style date pages): these show the same generic Taurus profile to everyone born on a date. No birth time, no location, no actual chart.
- The gap this page fills: a Taurus-focused Big Three with the method printed on the page, real lunar theory instead of date arithmetic, degree readouts for each placement, the same ascendant formula as our dedicated rising-sign tool, and an honest list of what it cannot do, with links to the ephemeris engines for the rest.
Frequently asked questions
If you were born between April 20 and May 20, yes by the standard tropical zodiac dates, and the calculator confirms it from the Sun’s computed longitude. Cusp birthdays (April 19–20, May 20–21) can fall either side depending on the year, so a computed position beats a date table.
The Moon’s longitude uses a simplified lunar theory that lands typically within about half a degree of ephemeris values, far inside the 30° sign boundaries, so the sign is reliable. The rising sign uses the standard ascendant formula; its main uncertainty is your birth time itself, plus up to about an hour from the local-mean-solar-time simplification near time-zone edges.
Because both move fast. The Moon orbits Earth in about 27 days, changing sign roughly every 2.5 days, and the ascendant cycles through all twelve signs roughly every 24 hours. Without a birth time any moon or rising figure is a guess, which is why the calculator refuses to run without one.
In traditional astrology, Taurus rising suggests a calm, grounded first impression and a steady approach to new situations. Take sign descriptions as archetypes for reflection, not predictions. If the rising sign is your main interest, the dedicated Taurus rising sign calculator goes deeper, with city presets and the exact ascendant degree.
No. A double-blind study published in Nature had professional astrologers match natal charts to personality profiles and found they performed at the level of chance. Astrology is a cultural and symbolic tradition. Enjoy the chart as entertainment and self-reflection, and do not make health, financial or relationship decisions from it.
Small differences come from the simplifications: this tool uses local mean solar time from your longitude rather than your civil time zone, and a simplified lunar theory rather than a full ephemeris. The signs should agree except very near a sign boundary or time-zone edge. For the definitive version, the ephemeris chart wins.
The tropical zodiac, used here and in Western astrology, is anchored to the seasons via the March equinox. The sidereal zodiac, used in Vedic astrology, is anchored to the constellations and drifts with precession, so signs sit almost a full sign earlier. Our sidereal birth chart calculator covers the Vedic system.
Yes. It runs entirely in your browser, needs no account and stores nothing. Copy the result with “Copy my results” or send it to another app with “Share results”.
Both. Each placement shows its sign and its degree within that sign. For example, Sun in Taurus 15.04°, and the table also lists the full ecliptic longitude (Sun 45.04°). The degrees come from the same computed longitudes as the signs, so they always agree. The Moon’s longitude is typically within about half a degree of ephemeris values.
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References
- Paul Schlyter, Stockholm, Sweden. How to Compute Planetary Positions (low-precision solar and lunar orbital elements, lunar perturbation terms, sidereal time; accuracy 1–2 arc minutes for the Moon). Accessed October 24, 2026.
- Shawn Carlson. A double-blind test of astrology, Nature 318(6045), 419–425 (1985) (professional astrologers matched natal charts to personality profiles at a level consistent with chance). Accessed October 24, 2026.
- Douglas Duncan, University of Colorado. Skeptical Studies in Astrology (accessible summary of Carlson’s double-blind Nature study and its design). Accessed October 24, 2026.
- NASA Science. Moon Facts (the Moon completes an orbit around Earth in 27 days, so it changes zodiac sign roughly every 2.25 days). Accessed October 24, 2026.
- Astrodienst. AstroWiki: Ascendant (the ascendant is the ecliptic point on the eastern horizon; roughly every two hours a different sign ascends; latitude changes the timing). Accessed October 24, 2026.