In Japan, the 2nd Monday of the New Year is marked as ‘Coming of Age Day’ or Sei

In Japan, the 2nd Monday of the New Year is marked as ‘Coming of Age Day’ or Seijin no Hi - 成人の日.
It is held for those who have matured to the age of 20 in the past year and commemorate their transgretion into adult hood.

This Coming of Age Day became an icey wonderland with the streets filling with snow.

For futher information about 2013’s Comeing of Age Day check tokyofashion’s article.