Using SkyGlobe planetarium software, a view of the solar system from Earth could be presented at the exact time of a person's birth, showing the real astronomical constellation that contained the sun on that day. At least two dozen visitors were totally stunned to find that they were in fact born under the sun sign of Ophiuchus. Though it is not listed as one of the zodiacal constellations, the Sun and planets pass through quite a large portion of Ophiuchus between the constellations of Scorpius and Sagittarius. In fact, there is a far larger portion of the zodiac in Ophiuchus than in Scorpius.
Astronomy is far more interesting than astrology.
There are actually 14 sun signs, the 12 familiar zodiacal signs plus Ophiuchus and Cetus. Due to the precession of the orbit of the Earth around the sun, the sun drifts slowly through the constellations. It was necessary to go back a thousand years in many cases to bring the sun signs of visitors back into their original horoscope signs. The Earth 'wobbles' as it spins every 26,000 years. The effect of this 'wobble' can be demonstrated with stunning effect by the SkyGlobe software with a high speed animation that stretches across 60,000 years.