Tomorrow is

Ganesha Chaturthi, the day Ganesha was born, is celebrated by Hindus all over the World.
Ganesha is the Hindu elephant-headed god, is known (by various names in different parts of India and on different occasions) as the Remover of Obstacles, the god of domestic harmony and of success. He is the most beloved and revered of all the Hindu gods, and is always invoked first in any Hindu ceremony or festival. He is the son of Parvati (the wife of Shiva, the Destroyer, the most powerful of the Hindu trinity of principal gods). There are many stories about how Ganesha got his elephant head, and about his exploits and antics. He was created as an ordinary boy, but was decapitated in battle. Shiva's emissaries were sent into the forest and told to get the head of the first animal they found and to fit that head onto the boy's neck. They found a little elephant, and it worked!

The Ganesha Mantra:

Vakratunda Mahaakaaya Suryakotee Sama Prabha
Nirvighnam kuru mey Deva
Sarva kaaryeshu Sarvadaa