Clear foundations. Honest boundaries.

Numerology

We add every digit of a valid date of birth in year-month-day format. We repeatedly sum the digits of the result until it is a single digit or 11, 22 or 33. Those three master numbers are preserved. The calculation is deterministic; no AI model chooses the number.

29 November 1990: 1 + 9 + 9 + 0 + 1 + 1 + 2 + 9 = 32 → 5. 1 January 2007: 2 + 0 + 0 + 7 + 0 + 1 + 0 + 1 = 11. Other traditions may use a different reduction order and produce a different master number. Our symbolic text is for reflection, not personality diagnosis.

Planetary positions

Our introductory tool uses Astronomy Engine to calculate geocentric ecliptic longitudes in the tropical zodiac for a known birth time. The Sun uses its apparent ecliptic position; the Moon uses its geocentric ecliptic position; other planets use geocentric vectors with aberration before conversion to the true ecliptic of date.

The selected IANA time zone is resolved using historical rules through Luxon and the server’s time-zone database. Nonexistent local times are rejected. Ambiguous clock-change times require a recorded fixed UTC offset. Known-time charts add a calculated ascendant, midheaven, twelve house cusps and major aspects. Choose Placidus, Equal or Whole-sign houses explicitly. Placidus is rejected at latitudes of 66° or higher, rather than silently replaced with another system.

We do not estimate a missing birth time. Calculation precision does not make an astrological interpretation scientifically established. Astronomy Engine 2.1.19 is used under its MIT licence. Swiss Ephemeris is not a runtime dependency; independent reference fixtures were used to verify calculation accuracy.

Unknown-time profiles sample 25 evenly spaced points between local midnight and 23:59. They disclose sign ambiguity and do not supply a guessed ascendant or houses. Known-time charts use conjunction/opposition orbs of 8°, square/trine 6° and sextile 4°. Planetary retrograde status describes apparent geocentric longitudinal motion.

Horoscopes and the celestial calendar

Daily, weekly, monthly and annual sign readings interpret tropical positions through Whole-sign solar houses, with the selected sign as the first house. Each reading discloses its reference snapshot. Annual editions include twelve independently calculated mid-month chapters, Moon phase times, global eclipses, sign ingresses and stations. These are general symbolic readings rather than personal predictions. Planetary station times are approximate, calculated from a centred six-hour longitudinal speed estimate.

Name and personal-cycle numerology

Latin letters use the repeating Pythagorean A–Z values 1–9. Supported accents are normalised with the mapping shown in the tool. Unsupported scripts are rejected rather than silently transliterated. Y can be treated as a vowel or consonant by your explicit choice. Expression, soul urge, personality, birthday and maturity preserve 11, 22 and 33 where the disclosed reduction reaches them. Personal years begin on 1 January and cycles reduce to 1–9; other traditions use different conventions.

Tarot

A daily symbol is drawn on the server from a 78-card catalogue using cryptographically secure randomness. A signed essential cookie keeps the same draw for the UTC day in the same browser. Clearing the cookie or changing browsers resets that anonymous continuity; this is not a cross-device daily lock.

Card graphics are original geometric ZodiVela designs. Names refer to the traditional Major and Minor Arcana. The accompanying text is a reflective prompt. It does not predict events, identify another person’s thoughts or make claims of danger.

Multi-card spreads draw without replacement and include independently randomised upright or reversed orientations. Monthly, yearly and weekly spreads preserve one draw per selected period in the same browser; other spreads preserve a daily draw. They use signed cookies rather than an account-wide lock. There are no copied deck illustrations or generated claims about another person's thoughts.

Relationship comparison

Sign and life-path comparisons introduce conversation questions without a numerical compatibility score. Two-chart synastry compares calculated longitudes and overlays each set of planets on the other profile's chosen houses. Cross-chart orbs are 6° for conjunction/opposition, 5° for square/trine and 3° for sextile. Adult consent is required for both profiles.

Yıldızname and abjad

Yıldızname is a varied historical tradition, rather than a single validated personal-fate algorithm. Our cultural collection explains this distinction and calculates Arabic abjad letter values using a disclosed table and documented variants. The modern digit reflection is a separate original layer, not an asserted traditional Yıldızname result. TDV's abjad reference and Yıldızname overview provide the historical context.

Coffee reflection

You identify shapes in your cup or private photo preview. The tool uses your selected observations and modern editorial prompts. No AI detects the image, and locations in the cup are not converted into predicted dates. Photos stay in the browser session.

Ritual suggestions

The ritual quiz uses three preference answers to suggest a practice, a duration and a setting. This is a disclosed, deterministic matching process. It is not a psychological test, a diagnosis or a treatment recommendation.

Information and interpretation

The current free experiences use calculations and original editorial text. They do not send your birth information, private question or quiz answers to a generative AI service. Any future AI-assisted paid product will describe that processing before you purchase it.

Questions we hear

Contact the ZodiVela team with a question about a method or a correction.