P: People celebrate it as a two-day festival; first day as Holika Dahan and second day as colourful Holi. 
Q: Holi is a religious Hindu festival celebrated with lots of preparations in the month of Phalgun. 
R: At Holika Dahan, they burn a heap of sticks, straws and cow-dung cakes lying in the mid of streets in the late evening or night. 
S: And, next day in the morning, they celebrate a colorful Holi by playing colours with friends, family members and neighbours.