No, the Sun can only be in one sign at your time of birth. But the moon and all the other planets are in a sign too. The distance between the planets, or aspects, matter. There are also 12 houses of the zodiac, and you guessed it, the meaning changes depending on all of these factors. So many people think it's only about where your Sun is at the time of birth. Sigh. I have information in my hubs, if you are interested. I wrote quite a few on Astrology. Best wishes.