Timing Important Life Periods With Synodic Returns
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Astrology uses two types of planetary motion: sidereal (from sider- the Greek word for star) and synodic (from sunodikós – a Greek word referring to a meeting or assembly). A sidereal return is when a planetary body reaches the same position in the sky relative to a fixed star. A synodic return is relative to a conjunction with its own previous position or a return to a conjunction with another planetary body).