成人の日 / せじんのひ / Seijin no Hi / Coming of (legal) Age Day in Japan is a holiday on the 2nd monday of January for 20 year olds. Ladies will go all out with kimono and accessories (as well as hair, makeup, and nails), where gentlemen may or may not; if not, they'll wear a suit or at least something formal. #fashion
Coming of Age Day (成人の日 Seijin no Hi?) is a Japanese holiday held annually on the second Monday of January. It is held in order to congratulate and encourage all those who have reached the age of majority (20 years old) over the past year, and to help them realize that they have become adults.