 In Japan, "Tango no Sekku" was assigned to the fifth day of the fifth month after the Nara period.Until recently, "Tango no Sekku" was known as Boys' Day (also known as Feast of Banners) while Girls' Day ("Hinamatsuri") was celebrated on March 3.In 1948, the government decreed this day to be a national holiday to celebrate the happiness of all children and to express gratitude toward mothers.