Pada (quarter)
Each nakshatras divides into four padas of 3°20′ (one navamsa width). Pada 1–4 cycle signs from the mansion's element, coloring how that nakshatra expresses in personality and compatibility.
Use pada after the whole nakshatra: Janma nakshatra + pada fine-tunes temperament and navamsa resonance. Provider vedic.chart_ext can expose pada_of_planet with nakshatra_of_planet.
Beginners: learn Moon's nakshatra first (moon-in-chart), then pada; see moon-nakshatra.