According to Maadhwaa calender, today (Chaithra Shukla Pournimaa) is the birthday of Hanumaan, the greatest devotee of Shree Raam, an Avataar of Shree Mahaa Vishnu.
Accoding to the great epic Raamaayanaa, when Shree Hari's Avataar as Shree Raam on the Earth was about to be over, he took all his devotees to His Abode. He desired to take Hanumaan also. But Hanumaan said to Shree Raam that he wished to stay here itself and be present wherever Shree Raam's name is sung or Shree Raama Kathaa is told.
His devotion to Shree Raam and Shree Seeta Devee is of the highest level.