Events
- 1635 - The third of the Tokugawa shoguns, Iemitsu, establishes the system of alternate attendance (sankin kotai) by which the feudal daimyō are required to spend one year at Edo Castle in Tokyo and one year back home at their feudal manor, while their families remained in Tokyo as virtual political hostages. (Traditional Japanese Date: June 21, 1635).
- 1783 - Mount Asama erupts, killing 35,000 people.
Births
- 1959 - Koichi Tanaka, chemist and engineer, Nobel Prize laureate
- 1970 - Masahiro Sakurai, video game designer, created Super Smash Bros. and Kirby
- 1990 - Shunya Shiraishi, actor
- 1993 - Yurina Kumai, singer