Diwali, the Hindu festival of lights, is an annual observance typically held over several days in October or November.
Recognized as a significant public holiday in India and celebrated by the global Indian diaspora, the festival incorporates various traditional elements.
These often include the exchange of sweets, fireworks displays, the illumination of oil lamps, and the adornment with flower garlands. Participants commonly engage in communal feasting, periods of self-reflection, and offering prayers for good fortune.
Source: https://www.nytimes.com/article/diwali-india-festival-lights.html