Leo (♌) — Fixed Fire, The Sovereign

Leo spans 120-150 degrees as the fixed fire sign, the sole domicile of the Sun. As the Sun's own sign, Leo expresses the solar principle most directly: vitality, creative self-expression, and the will to radiate outward from a stable center. Ptolemy classifies Leo as hot and dry in the Tetrabiblos, placing it under the Sun's complete governance — no other planet shares rulership here. The Lion symbolizes sovereign authority within the zodiacal sequence, and Cafe Astrology identifies Leo's core drive as the need to create, to be seen, and to lead — with pride as its characteristic shadow when self-expression curdles into self-importance.