On the second Monday in January each year, it's our public holiday as "Coming of Age Ceremony".
The coming of age as adult in Japan is 20 years old now and the target persons in 2016 are with their birthdays between the second April 1995 and the first April 1996 as counted by school years in Japan (from April till March for a school year)
They celebrate with the old schoolmates in each born local communities.