What the Rising sign is

The Sun sign comes from your birthday, so everyone born in the same few weeks shares it. The Rising sign comes from the exact time and place, so it can change from one hour to the next. It describes the first impression you give, the way you meet a new situation, and it sets the starting point for the twelve houses of your chart.

Why the birth time matters

The whole zodiac turns over the horizon once a day, so a new sign rises roughly every two hours. A birth time that is out by half an hour can move your Ascendant into the next sign if you were born near the edge of one. The most reliable time is the one on your birth certificate or in your hospital record; a time remembered by family is a good start.

No birth time at all? The tool still draws your chart, set for 12:00 noon, and your Sun and planets will be right (the Moon almost always). The Rising sign and houses are then an estimate, and a known time fine-tunes them.

Famous Rising signs

Every celebrity chart on Stars at Birth uses a birth time rated AA or A, so their Rising signs can be trusted. See famous people by sign, or read how we know a birth time.