My astrology / Your observatory

Calculate your chart

Date, time and place of birth. Nothing more is needed, and nothing more is kept.

1Birth details
2Calculation
3Your personal space

Name (optional)

For the personal display only. Your name stays in this browser and is not sent with the calculation.

Date of birth Time of birth

Don't know the hour? Leave it empty. The signs still hold; the houses do not.

Place of birth

Start typing and pick a place from the list.

House system

Unsure? Placidus is the most used. You can switch later without entering anything again.

Pick a place from the list first.

What happens to your data

Date, time and place are used for the astronomical calculation. Your optional name stays in this browser and is not part of the calculation or chart address.

Without an account

You do not need to sign up. The chart stays in this browser; clear it and it is gone -- and entering the same details again returns exactly the same chart.