How Mountain Day Came to Be: Shaping a New Holiday

Mountain Day is a relatively new public holiday, now marking its tenth year today, August 11th, since becoming official in 2016. Yet the idea was in motion long before that. Despite Japan's deep relationship with its mountains, and the fact that roughly 75% of the country is mountainous, the path to creating a dedicated holiday took decades to take shape.

The movement began after Sea Day became a national holiday in 1995, sparking calls for a mountain counterpart. Local governments and mountain organizations started creating their own unofficial “Mountain Day” events. A major milestone arrived in 2010, when five major mountain groups, including the Japan Alpine Club and the Japan Mountain Guides Association, formed the Mountain Day Establishment Council to push for nationwide recognition.

Their efforts were soon joined by a cross‑party parliamentary group, leading to official establishment in 2014 and implementation in 2016. The date was chosen for practical reasons: August didn't have a public holiday, and the 11th is just before Obon. It also avoids the 12th, a date many were against because it is the anniversary of the famous 1985 JAL Flight 123 crash.