Ramnavami is celebrated to commemorate the birth of Lord Rama, who killed the demon king Ravana. Along with the Vaisnavas, who celebrate it with due solemnity, Ramnavami is celebrated all over the the country on India.
Fasting is the norm of the day, and the general belief is that it is a sin not to fast this day. It is also believed that Lord Rama fulfills wishes of all those who fasts and pray to Him on this day. The fast is broken on midnight, generally with fruits and fruit extracts.