Diwali is very famous festival in India 
on this day lord Rama come to ayodhya after 14 yrs.
the people of ayodhya celebrated his arrival.
the people lighting up the houses with candles and lamps .
the people celebrated this festival with their friends and recitatives ..
Diwali is also called festival of light
on this day all people enjoy the firework at night 
:-) may be it helps you ,,,....