# Astriel

> Public astrology calculators, chart reference guides and published journal articles.

Publisher: 28 PORTUGAL OPERATIONS LDA., trading as Astriel. NIPC 518 579 727. Contact: hello@astriel.ai. Astrology's symbolic interpretations are distinct from calculated astronomical positions.
Citations: use the linked page title and canonical URL. For a sky or lunar value, include the observation time and time zone displayed on that page. For editorial material, retain its stated sources and publication/update dates.
Freshness: current sky and lunar pages fetch timestamped calculations. Reference pages follow their published method; this index does not certify interpretation quality or numerical precision beyond those stated limits.
Journal listing checked successfully at 2026-11-03T13:26:24.755Z. Up to twelve recently published articles are listed; the journal contains the remaining archive.

## Start here

- [Astriel](https://astriel.ai/): Browse the public tools and reference library.
- [Calculation methods](https://astriel.ai/method/): Zodiac, house system, uncertainty and computation limits.

## Calculators

- [Sidereal birth chart](https://astriel.ai/birth-chart/sidereal/): Find Lahiri D1 positions and your Moon nakshatra, with Placidus houses and visible uncertainty.
- [Solar return calculator](https://astriel.ai/solar-return/): Estimate your Sun’s return and calculate the chart for an explicit location and year.
- [Part of Fortune calculator](https://astriel.ai/part-of-fortune/): Calculate the Lot of Fortune and inspect the day or night formula.
- [Birth chart](https://astriel.ai/birth-chart/): Calculate planetary placements, houses and aspects from your birth details.
- [Big three](https://astriel.ai/big-three/): Find your Sun, Moon and rising sign, with limits for uncertain birth times.
- [Moon sign](https://astriel.ai/moon-sign/): Find the Moon placement for your birth date, time and place.
- [Rising sign](https://astriel.ai/rising-sign/): Calculate your Ascendant using an exact birth time and place.
- [Chart ruler](https://astriel.ai/chart-ruler/): Find your traditional Ascendant ruler and follow the planetary chains in your chart.
- [Lilith calculator](https://astriel.ai/lilith/): Find your mean Black Moon Lilith sign and check possible signs for an uncertain birth time.
- [North Node calculator](https://astriel.ai/north-node/): Find your true North Node sign, with possible signs when the birth time is uncertain.
- [Human Design chart](https://astriel.ai/human-design/): Find your Human Design type, strategy, authority and profile, with a full bodygraph.
- [Midheaven calculator](https://astriel.ai/midheaven/): Find the MC sign and degree and locate your tenth Placidus cusp.
- [Sign stellium calculator](https://astriel.ai/stellium/): Find groups of 3 or more bodies in one sign, with possible memberships for an uncertain birth time.
- [Personal transits](https://astriel.ai/transits/): Compare planetary movements over a date range with your birth chart.
- [Synastry](https://astriel.ai/compatibility/synastry/): Compare the planetary contacts between two birth charts.
- [Composite chart](https://astriel.ai/compatibility/composite/): Calculate the planetary midpoints of two birth charts.
- [Life path calculator](https://astriel.ai/numerology/life-path/): Calculate a number from your birth date and see every reduction step.
- [Chaldean name calculator](https://astriel.ai/numerology/chaldean/): See the letter values, name parts and reduction behind a name number.

## Reference library

- [Sky and dates](https://astriel.ai/astrology/today/): See current planetary positions or choose a calendar date.
- [Moon phases and calendar](https://astriel.ai/moon/today/): See the current phase and primary lunar dates for the next 12 months.
- [Eclipse calendar](https://astriel.ai/eclipses/): Solar and lunar eclipse dates, types, visibility maps and chart context.
- [Birthday astrology](https://astriel.ai/born/): Find your date and compare calculated Sun positions by birth year.
- [Born on a cusp](https://astriel.ai/cusp/): Check Sun sign boundaries by birth year and distinguish them from Placidus house cusps.
- [Numerology tools](https://astriel.ai/numerology/): Choose date or name arithmetic and inspect the method.
- [Relationship tools](https://astriel.ai/compatibility/): Choose between comparing two charts and calculating a composite.
- [Zodiac signs](https://astriel.ai/signs/): Compare the 12 signs, their degree ranges, elements and modalities.
- [Aspects and orbs](https://astriel.ai/aspects/): Understand chart angles, allowed orbs and applying or separating motion.
- [Planets in astrology](https://astriel.ai/planets/): Explore the ten chart bodies, symbolic themes and sign rulerships.
- [Retrograde planets](https://astriel.ai/retrograde/): Check current planetary motion and understand natal retrogrades, stations and shadows.
- [Tree of Life](https://astriel.ai/tree-of-life/): Learn the ten sefirot and compare Jewish and Hermetic contexts.
- [Horoscopes](https://astriel.ai/horoscope/): Browse published daily, weekly and monthly readings with dated sky references.
- [Houses in astrology](https://astriel.ai/houses/): Read the 12 house topics and learn how Placidus cusp degrees locate planets.
- [Learn astrology](https://astriel.ai/learn/): Start with guides to chart placements and uncertain birth times.
- [Sitemap index](https://astriel.ai/sitemap.xml): Canonical page inventories grouped by content family, plus current journal and lunar archives.

## Journal

- [Journal and guides](https://astriel.ai/blog/): Browse and search currently published articles.
- [Aquarius: Mars in Leo opposes 13° Aquarius, so agree how a dispute gets settled](https://astriel.ai/horoscope/aquarius/monthly/2026-10-01/): Mars moves through Leo in October and opposes a Sun near 13° Aquarius around 20 October. Agree on a fair way to compare two proposals before an argument turns into a test of who pushes longest.
- [Aries: Saturn is moving back over 10° Aries, so pick the commitment you can keep](https://astriel.ai/horoscope/aries/monthly/2026-10-01/): Saturn moves back from 11°32′ to 9°18′ Aries during October. Pick a commitment you can keep, then set a date to check how the plan is working.
- [Cancer: Venus in Scorpio trines 3° Cancer, so give enjoyment a place that's easy to keep](https://astriel.ai/horoscope/cancer/monthly/2026-10-01/): Venus in Scorpio forms a trine to a Sun near 3° Cancer around 20 October. Make room for something you enjoy without turning it into one more duty.
- [Capricorn: Saturn in Aries squares 10° Capricorn, so check which duties are still yours](https://astriel.ai/horoscope/capricorn/monthly/2026-10-01/): Saturn, your sign's ruler, squares a Sun near 10° Capricorn from Aries on 20 October. Check which responsibilities you still choose and which ones you picked up by habit.
- [Gemini: Mercury stays in Scorpio all October, so show how you reached your conclusion](https://astriel.ai/horoscope/gemini/monthly/2026-10-01/): Mercury, Gemini's ruler, stays in Scorpio at all four October checkpoints. Follow a question until you can check the evidence, then explain how you got to your answer.
- [Leo: Mars crosses 13° Leo with Jupiter further along, so take the first step before the big plan](https://astriel.ai/horoscope/leo/monthly/2026-10-01/): Mars and Jupiter are both in Leo in October, and Mars meets a Sun near 13° Leo around 20 October. Take one practical step toward a bigger ambition and let the result shape the next one.
- [Libra: Venus moves back into late Libra by 31 October, so spell out the standard you're using](https://astriel.ai/horoscope/libra/monthly/2026-10-01/): Venus, Libra's ruler, moves back from Scorpio into Libra by 31 October and meets a Sun near 27° Libra. Turn a private preference into a standard other people can see and use.
- [Pisces: Mercury in Scorpio trines 20° Pisces, so give your idea enough detail to hand over](https://astriel.ai/horoscope/pisces/monthly/2026-10-01/): Mercury in Scorpio forms a trine to a Sun near 20° Pisces around 20 October. Explain an idea well enough that someone else can carry it on without guessing what you meant.
- [Sagittarius: Jupiter in Leo trines 23° Sagittarius, so test your idea beyond its best example](https://astriel.ai/horoscope/sagittarius/monthly/2026-10-01/): Jupiter, your ruler, moves through later Leo and forms a trine to a Sun near 23° Sagittarius around 20 October. Try an idea in a second setting before you decide how far it reaches.
- [Scorpio: Mercury crosses 20° Scorpio with Venus in your sign too, so ask the question you mean](https://astriel.ai/horoscope/scorpio/monthly/2026-10-01/): Mercury and Venus are in Scorpio at three of the four October checkpoints, and Mercury meets a Sun near 20° Scorpio around 20 October. Ask the question you want answered before you judge the reply.
- [Taurus: Venus in Scorpio opposes 8° Taurus, so check what a shared arrangement asks of you](https://astriel.ai/horoscope/taurus/monthly/2026-10-01/): Venus, Taurus's ruler, moves back from Scorpio into Libra in October and opposes a Sun near 8° Taurus around 10 October. Look again at what an arrangement asks of you and how its terms are shared.
- [Virgo: Mercury in Scorpio sextiles 20° Virgo, so keep the reason with every correction](https://astriel.ai/horoscope/virgo/monthly/2026-10-01/): Mercury, Virgo's ruler, moves through Scorpio and forms a sextile to a Sun near 20° Virgo around 20 October. Record the evidence behind each change so the fix still makes sense later.