The Sun in the sign of Gemini provides a person with a very flexible and easily adaptable source of energy that is powered by all sorts of information and ideas. Sun-in-Gemini people are very well aware of what is happening around them and are always ready to change their direction anytime something interesting appears nearby.
They like to experience many things, to meet various new people, to see new places, and have, as a result, a life full of events, trips and meetings. Sun-in-Gemini people want to know everything and to be everywhere.
Most people know their Sun Sign (a.k.a. Star Sign), which can be easily found from the date of birth using widely available tables of Sun Sign dates. However, in many cases, when the date of birth is close to the border between two signs, such general tables can be wrong. This is because the precise date and time of the Sun's entry into a Sign of the Zodiac differs quite substantially year after year. Even for the same year, the time of the Sun's entry into, say, Aries will be very different in New York and Tokyo.
As an example, everyone born on the 20th of January 1980 in San Francisco has Aquarius for their Sun Sign, because the Sun was already in the Sign of Aquarius then. However, most popular tables will tell you that January 20, 1980 still belongs to Capricorn.
I created this Sun Sign Calculator primarily for those who want to find their true Sun Sign. By entering your date and time of birth and specifying the time zone where you were born, you can make sure that the probability of an error is minimal. However, this calculator isn't perfect, in some cases it can make a mistake. See Sun Sign Calculator and its Limitations, as well as a description of a few alternatives.
Also, this calculator allows me to provide a link to a list of famous people who have their Sun in exactly same degree as yours. I think this information will be interesting for many users.