The Hindu calendar, or Panchang, is a sophisticated blend of astronomy, mathematics, and traditional wisdom, illustrating the advanced scientific knowledge of ancient Hindu scholars. Unlike the Gregorian calendar, which is strictly solar, the Hindu calendar is lunisolar, harmonizing lunar and solar cycles to track days, months, and years. This balance ensures that key festivals align with specific lunar or solar positions, emphasizing the interconnectedness of time and nature. Understanding this calendar sheds light on the intricate science behind Hindu festivals and daily practices.