Sun sign dates 
(http://en.wikipedia.org/wiki/Sun_sign#Sun_sign_dates)
Below are each of the signs with a brief description of their characteristics,
and their approximate corresponding dates when the sun enters and leaves each
sign using the tropical zodiac. The precise date varies slightly from year to
year, owing to the leap year adjustment. A person born on the first or last day
of a sign is on what is called the cusp and needs to check their exact time of
birth to be sure of their sun sign.

Aries (Mar 21-Apr 20): Assertive, impulsive, sometimes selfish.
Taurus (Apr 21-May 21): Resourceful thorough, sometimes indulgent.
Gemini (May 22-Jun 23): Logical, inquisitive, sometimes superficial.
Cancer (Jun 23-Jul 22): Tenacious, sensitive, sometimes clinging.
Leo (Jul 23-Aug 22): Generous, proud, sometimes arrogant.
Virgo (Aug 23-Sept 22): Practical, efficient, sometimes over-critical.
Libra (Sept 23-Oct 22): Co-operative, fair, sometimes lazy.
Scorpio (Oct 23-Nov 21): Passionate, sensitive, sometimes obsessive.
Sagittarius (Nov 22-Dec 21): intelligent, straightforward, sometimes careless.
Capricorn (Dec 22-Jan 19): Prudent, ambitious, sometimes suspicious.
Aquarius (Jan 20-Feb 18): Humanitarian, unconventional, sometimes detached.
Pisces (Feb 19-Mar 20): Imaginative, sensitive, sometimes impractical.