Free birth chart
Your whole chart, and how it was worked out
Every placement, house and aspect, calculated from a published astronomical engine and cast for your birthplace’s historic time zone. Tap any term to see what it means and how it was measured. No account, no email address, and nothing you type is kept.
What makes this one different
- It shows its arithmetic.
- Positions come from a published astronomical engine, not from tables copied out of a book. Every degree, every orb and every house cusp is on the page, and every term is defined. If you ever find a number here that does not check, that is a bug and we want to hear about it.
- It is cast for the right time zone.
- Time zones and daylight saving have changed repeatedly, and a chart cast with today’s offset for a birth in 1974 is wrong by an hour — which moves the Ascendant by fifteen degrees. The chart above uses the offset that was actually in force at that place on that date.
- It says when it does not know.
- Without a birth time there is no Ascendant and there are no houses. Many sites cast the chart for noon anyway and print a rising sign that is a guess. This one leaves them out and says why.
- It keeps nothing.
- Your birth date, time and place are used to do the calculation and then discarded. They are not written to a database, not put in the address bar, and not attached to a name, because OrbHeaven never asked you for one.