Holi is an important spring festival for Hindus, a national holiday in India and Nepal with regional holidays in other countries. To many Hindus and some non-Hindus, it is a playful cultural event and an excuse to throw coloured water at friends or strangers in jest. It is also observed broadly in the Indian subcontinent. Holi is celebrated at the end of winter, on the last full moon day of the Hindu luni-solar calendar month marking the spring, making the date vary with the lunar cycle.
Diwali is a five-day festival, the height of which is celebrated on the third day coinciding with the darkest night of the lunar month. During the festival, Hindus, Jains and Sikhs illuminate their homes, temples and work spaces with diyas, candles and lanterns Hindus, in particular, have a ritual oil bath at dawn on each day of the festival.The festival climax is on the third day and is called the main Diwali. It is an official holiday in about a dozen countries, while the other festive days are regionally observed as either public or optional restricted holidays