Secondary Progressions Calculator
Secondary progressions use the classical 'a day for a year' technique: the planetary positions on the day exactly as many days after your birth as you are years old, genuinely recomputed for that specific date rather than approximated. Traditionally read as the chart's own slow inner unfolding over a lifetime.
A progressed New Moon or a progressed planet changing sign are both traditionally treated as real turning points under this technique, each happening at a specific, calculable age rather than a vague life-stage guess — precise enough that two people born a year apart can have meaningfully different progressed timelines.
Frequently Asked Questions
What does 'day for a year' mean in secondary progressions?
Each day after your birth stands in for one year of your life — this tool computes real planetary positions for the moment that many tropical years' worth of days after your birth, the actual chart for that day.
Which planet moves the most in a progressed chart?
The progressed Moon, by far — it advances roughly one degree per 'year,' while progressed Mercury, Venus, and the Sun creep forward only a fraction of a degree, and the outer planets barely move.
Do progressed planets get their own houses, or do they reuse my natal houses?
This tool builds a full new house system around the progressed date's real sidereal time at your birth location, rather than reusing your natal houses.
Is a progressed chart the same as a transit chart?
No — progressions move slowly and are read as your chart's own gradual inner unfolding, while transits are the real current positions of the planets right now, read as more immediate triggers.
Do I need my exact birth time for accurate secondary progressions?
Yes — the progressed moment is computed from your exact birth Julian Date, and the progressed houses depend on the real sidereal time at your birth location.