Table 2.

Chronological listing of events in 2011.

Date (year/month/day)	Event and details
2011/03/11	An earthquake off the Pacific coast of Tohoku occurred.
2011/03/12	Reactor 1 of Fukushima Daiichi Nuclear Power Station experienced a hydrogen explosion.
2011/03/15	The damage to reactors 2 and 4 of Fukushima Daiichi Nuclear Power Station became clear.
2011/03/23	Thyroid equivalent dose predictions involving iodine-131 for infants (under 1 year old) using the System for Prediction of Environmental Emergency Dose Information were released by the Cabinet Office’s Nuclear Safety Commission.
2011/03/28	A website visualizing the environmental radioactivity levels all over Kanto was launched.
2011/09/10	The then-Minister of Economy, Trade, and Industry reportedly resigned after a visit to the exclusion zone of the Fukushima nuclear disaster, where he joked to a journalist, “I’ll give you radiation.” A fire broke out at Sendai Nuclear Power Plant.
2011/10/14	A radium ray source was found under the floor of a private home in Setagaya Ward, Tokyo.
2011/11/11	A large number of tweets were posted stating “Sign an emergency petition to save the children of Fukushima.”
2011/11/23	Geiger counter advertisements were posted approximately 2-3 times as often compared to the days before and after.
2011/11/24	At Tokyo District Court, TEPCO responded, “Any radioactive substances were not the property of TEPCO. Consequently, TEPCO has no responsibility for decontamination.”
2011/11/26	TEPCO's response was reported in the press.