SIDERA calculates planetary positions from your birth date, time, and place — using the same math astronomers use. Natal charts, synastry, and personal forecasts, grounded in real numbers, not stock phrases.
what's inside
Positions of 10 planets, the Ascendant and Midheaven, and houses — from your birth date, time, and coordinates.
Comparing two charts: real astronomical aspects between planets — not generic sun-sign talk.
Current planetary positions are checked against your natal chart — the forecast is built on actual transiting aspects.
tool 1
Enter your birth date, time, and place — the more precise the time, the more accurate the Ascendant and houses.
tool 2
Enter both people's birth data — we'll calculate the real aspects between their planets.
tool 3
Uses the chart from the "Natal Chart" section above and the current planetary positions.