Diwali or Deepavali, popularly known as the “festival of lights” is a five-day Hindu festival which starts on Dhanteras, celebrated on the thirteenth lunar day of Krishna paksha (dark fortnight) of the Hindu calendar month Ashwin and ends on Bhaubeej, celebrated on second lunar day of Shukla paksha (bright fortnight) of the Hindu calendar month Kartik.
I am sure if you are having friends and relatives who like Hindi language then you would be searching about How to wish them Happy Diwali in Hindi.
How to Say Happy Diwali in Hindi :
In Hindi, Happy Diwali is said by saying शुभ दिवाली (Shubh Diwali) or दिवाली मुबारक (Diwali Mubarak)
However people generally wish each other by saying – दिवाली की हार्दिक शुभकामनाएं (Diwali Ki Hardik Shubhkamnaye).
Diwali Wishes in Hindi :