Yeah I didn't know about this either LOL!! But itz Girl's Day!
The Hina Matsuri or Doll Festival or Girl's Festival is celebrated on March 3. On this day, families with girls wish their daughters a successful and happy life. Dolls are displayed in the house together with peach blossoms. The doll festival has its origin in a Chinese custom in which bad fortune is transferred to dolls and then removed by abandoning the doll on a river. On Hina Matsuri, sweet sake is drunken and chirashi sushi is eaten.