As the name indicates, individuals who are born under the fire signs of Aries, Leo and Sagittarius are said to have fiery personalities; this means that fire signs may display high-energy characteristics and a tendency to display flares of strong emotion. Astrologers believe that fire signs can be impulsive, with a tendency to rely on instinct and intuition, occasionally to the detriment of a project or a relationship. Individuals with fire signs may be passionate, impulsive, egotistical, spontaneous, energetic, intense and possessing of a tendency to gain and lose interest in things relatively quickly.
Intuition is said to be a major factor in the fire sign personality. This may mean that those who fall under these signs act in ways that may seem incautious or unwise to others who tend to be more conservative. Astrologers may attribute this type of action in an Aries, Leo or Sagittarius to the fire signs' natural instinct for making choices related to destiny. The birth dates for fire signs include March 21 through April 20 (Aries), July 23 through August 23 (Leo) and November 23 through December 21 (Sagittarius). Each of these signs is said to impart different characteristics on the individual, and while certain basic fire sign characteristics may appear in an Aries, Leo or Sagittarius, astrologers may say that finer details will be determined by individual sign.