Sky at birth
The Sun, Moon and planets as they stood, in two zodiacs.
Where each one stood
The same sky against two zodiacs: the outer ring follows the seasons, the inner one the stars.
Your birth time isn't known, so this uses noon. Values marked time-sensitive change during that day.
| Body | Tropical | Sidereal |
|---|
Read more
The tropical zodiac starts the signs where the Sun stands at the March equinox, the day light and dark are even. Aries begins there, and the other eleven signs follow in 30° steps. It is tied to the seasons, not to the stars behind them.
The Earth's axis wobbles like a slowing top, turning round once in about 26,000 years. This is precession. As it turns, the equinox point slides back against the stars by about a degree every 72 years.
The sidereal zodiac keeps the signs pinned to the stars instead. The two lined up roughly two thousand years ago; today they are about 24° apart, which is why a Sun "in Aries" in one is often "in Pisces" in the other.