A revision to the Law on National Holidays was enacted in a parliament session on May 23rd 2014 to be enforced from January 1st 2016. 

The legislation states that Mountain Day is intended is to provide “opportunities to get familiar with mountains and appreciate blessings from mountains”. 

The holiday was established after the Japanese Alpine Club and other groups lobbied for the bill, arguing that Japan, where Shinto beliefs in nature have shaped the culture, should celebrate its peaks and mountains. 

This is fitting as around 70% of the landmass of Japan is mountainous, and activities such as hiking and skiing are popular. All of Japan’s primary islands has a mountain range running through it. Mount Fuji (3,776 m) is the highest mountain in Japan, one of the nation’s “Three Holy Mountains”, and one of the most recognizable symbols of Japan. Other prominent mountains incorporate Mount Kita, Mount Hotaka, Mount Yari, Mount Tate, Mount Haku, and Mount Kumotori. Some of them are active volcanoes. 

August 11th was chosen as the date for Mountain Day as some local authorities in mountainous regions of the country had already set that date as a day to honour their mountains. It has been said that the date is fitting as eight, written in kanji (characters used in written Japanese), looks like a mountain and that the number 11 looks like two trees.