Explanation:

The festival of Vishwakarma Jayanti is celebrated as the birth anniversary of Lord Vishwakarma every year. It is observed every year on the 16th or 17th of September as per the Gregorian calendar. Vishwakarma Puja, also known as Vishwakarma Jayanti, Biswakarma Puja or Biswa Karma Puja, is celebrated on September 17 every year. The day marks the birth of Hindu God Vishwakarma, the 'architect' of the gods. It is believed that Lord Vishwakarma built palaces, weapons and buildings for the gods.