alexdunae/holidays — pull request #84 by YoshiyukiHirano (2014-11-09 08:16:04+00:00)
Title: Added substitute holiday of Japan

New Year's Day is National Holiday in Japan, therefore substitute holiday will be applied.
by Act on National Holidays #3

Please see:
http://www8.cao.go.jp/chosei/shukujitsu/gaiyou.html