Explore your possible birth time

An optional experiment using dated life events and astrological patterns.

Experimental — accuracy has not been validated

This cannot establish when you were born. Different times can fit the same events, and a convincing match can happen by chance. Check birth records or family recollections first.

You can get a compatibility report with your time unknown. This experiment will not change your report or save a guessed time as fact.

Birth date

Birth city

Type at least 2 letters, then select your birth city from the list.

Do you remember a rough time?

Only the selected window on your birth date is searched. If unsure, choose the whole day.

Three to eight separate milestones

Choose events spread over at least six months. Use one entry for related milestones. You only need an event type and date; no names or personal story.

Event details are sent to our server for this calculation. This estimator does not save them, send them to an AI provider, or use them for training.

Event 1

Date certainty

Event date

Event 2

Date certainty

Event date

Event 3

Date certainty

Event date

I understand this is speculative and agree to send these dates for this calculation.

How this experiment works

We compare Jupiter, Saturn, Uranus, Neptune and Pluto on event dates with the Ascendant or Midheaven for possible birth times. Only conjunctions and oppositions within two degrees count. Relationship events use the Ascendant; moves, career changes and graduations use the Midheaven; other events use both.

Each event contributes only its strongest contact, averaged across sampled dates. Month-only dates count half as much. These choices are fixed experimental rules, not proven relationships. We show up to three groups of similar high-scoring times and can return insufficient evidence.

Exact-day dates are sampled at UTC noon and one day either side; month-only dates at five points through the month. This is an approximation. Solar arcs and secondary progressions are not included in this version.

Sources: Astrodienst on rectification, its birth-time FAQ, and Banshoreki’s published method.