Why did the Hindu calendar in 2025 have two different days for Diwali? Why do Hindu festivals keep shifting days every year? Hindu festivals in fact, have a mathematically accurate system and thus the argument of "shifting days" becomes redundant. In this episode, we delve into the logic of the Hindu calendar, also popularly known as the Indian calendar. This calendar is not simply based on the lunar cycle, but it derives it's logic from precise mathematical calculations of the positions of the solar system. We breakdown every single concept in depth. What Tithi is in Astrology, how is a day in Hindu calendar different from a day in the Gregorian calendar, what is a Poornimanta system & what is a Amanta system within the Hindu calendar itself, how do the Zodiacs fit into this, and many more related concepts.