Sandhi refers to junction or transition zones in Vedic astrology. Rashi Sandhi is the boundary between two zodiac signs — planets placed within 1° of a sign boundary are weakened as they transition between sign energies. Dasha Sandhi is the transition period between two major dasha periods — classically described as a time of uncertainty, health vulnerability, and karmic realignment as the native's life compass shifts from one planetary influence to another. Nakshatra Sandhi refers to the last and first padas of adjacent nakshatras. All sandhi positions are considered sensitive and require careful interpretation — they often mark life turning points.