November 15, 2016

Shichi-Go-San is a traditional rite of passage and festival day in Japan for three- and seven-year-old girls and three- and five-year-old boys, held to celebrate the growth and well-being of young children. 

It is said to have originated in the Heian period amongst court nobles who would celebrate the passage of their children into middle childhood. The ages 3, 5 and 7 are consistent with East Asian numerology, which holds that odd numbers are lucky.