The Japanese Diet passes an anti-terrorism law that has been accused by critics as a threat to freedom.
Critics including UN expert fear legislation passed by Abe government could target ordinary citizens and deter grassroots opposition to government policies
- The Guardian
- The National Diet of Japan passes legislation allowing Emperor Akihito to abdicate. The abdication is to take place within three years.
- Thousands protest outside the Japanese parliament in Tokyo against the relocation of a U.S. military base on Okinawa Island. Residents cite noise, pollution, and crime as reasons for not wanting a new base built.
- Japan's upper chamber of Parliament approves controversial legislation, which the lower chamber passed in July, that expands the role of the Japanese Self-Defense Forces overseas.
- Fist-fights erupt between legislators in the National Diet of Japan over a security bill that would allow Japan Self-Defense Forces to fight abroad. Japan had previously sent only a small amount of troops to Iraq.
- The National Diet of Japan votes to lower the voting age from 20 to 18.
- Japanese Prime Minister Shinzo Abe is expected to dissolve the House of Representatives on September 28, 2017 to make way for fresh elections.
- A North Korean missile flies over Hokkaido, Japan, triggering the J-Alert system, following a similar event on 29 August.
- Japan agrees to help with the construction of an Indian bullet train.
- North Korea fires a Hwasong-12 ballistic missile which flies 2,700 km, passing over Hokkaido, northern Japan, prompting the activation of the nationwide J-Alert warning system. This is first time since 2009 that a North Korean missile has passed over Japanese territory.
- The death toll from flooding on the southern Japanese island of Kyushu rises to 15, with six others missing.