The Nature of the Angles of the Chart
The four angles in a birth chart are derived from the diurnal movement of the Sun. The Ascendant or 'Rising' Sign represents the Sun's rising, the Midheaven or 'MC' the highest point the Sun reaches, the Descendant or 'DS' the setting Sun and 'Imum Coeli' is latin for "bottom of the sky. These play a critical role in interpretation and timing of life events in Astrology.