Diwali When Is Diwali

Understanding Diwali's Date

Diwali falls on Amavasya, the new moon day in the Hindu lunisolar month of Kartik. That means the date shifts every year on the Gregorian calendar, usually landing somewhere between mid-October and mid-November. In 2024 it was November 1st. In 2025 it's October 20th. The exact timing depends on where you are, because regional calendars vary slightly. The festival spans five days, but the main celebration is on the third day, Lakshmi Puja. The others are Dhanteras, Choti Diwali, Govardhan Puja, and Bhai Dooj. If you are asking for travel plans or office closures, you only really need the main date. But if you are trying to coordinate with family across different regions, things get messy fast. I spent years managing event scheduling for a company with offices in Delhi, Mumbai, and Hyderabad. One year, we had a product launch planned for the afternoon of Diwali in Delhi. The Delhi team refused to attend, citing the evening puja at their homes. The Mumbai office was still working because their local calendar placed the main rituals on a slightly different time window. We lost four hours of productive work and had to reschedule. After that, I made it a rule: never book anything during the three-day window around Diwali without confirming each regional office's specific calendar.

The core issue is that different regions follow different calculation methods. South Indian calendars often use the Tamil or Telugu Bikram Sambat, while North Indian ones rely on the Vikram Samvat. These can differ by a day depending on the lunar sighting. Astrologers in each region publish their own Panchang, and they do not always agree. I learned this the hard way when two of my cousins in Pune and Kolkata invited me to different dinner dates for Diwali because their families followed different panchangs. I ended up picking one and missing the other. If you need a reliable answer for when Diwali falls, check the Panchang published by the major mutts or observatories like the Pune Astronomical Observatory. They tend to be more accurate than random apps. Some websites simply copy from one source and don't verify, so the dates on Google can sometimes be wrong by a full day for certain regions. Always cross-reference with at least two sources before making decisions based on the date. Key dates to remember:

Diwali 2024: November 1st (main day) Diwali 2025: October 20th Diwali 2026: November 7th

The puja muhurat timing matters more than the calendar date if you are actually performing rituals. On some years, the Amavasya tithi overlaps with the previous day's pratipada tithi in certain time zones, which means the puja might technically fall on what looks like the wrong date on a standard calendar. This happens roughly once every decade or so. I've seen families get confused about this because the online calculators don't always account for timezone differences in tithi calculations. For most practical purposes — ordering sweets, sending greetings, planning time off — the Gregorian date is sufficient. The regional variations only matter if you are doing something religion-specific or trying to synchronize across multiple Indian states. The five-day structure stays consistent every year, so you can always count forward from Dhanteras to Bhai Dooj as a rough framework.