Individuals born within the period when the Sun was in this sign are considered Taurus individuals. Under the tropical zodiac, the Sun is in Taurus roughly from April 21 to May 20. The Sanskrit name of Taurus in Hindu astrology is Vṛṣabha.
Compatibilities
Generally, Taurus is considered compatible with Capricorn, Virgo, and Taurus itself. These signs share an earthy demeanor and are believed to relate on that merit.
There are many variables in the astrology chart that determine compatibility of individuals. The position of the Sun, the Moon, the planets and the aspects they form with each other are assessed by astrologers before judgment on compatibility is made. The signs listed as compatible with Taurus do not reflect an individual profile or individual reading as interpreted within astrology, but rather reflect a general guideline and reference to compatibility as dictated by variables such as Qualities and Elements within the Zodiac. The branch of astrology dealing with interpersonal compatibilities is called Synastry.
Source : http://en.wikipedia.org/wiki/Taurus