"The Tokyo Metropolitan Government is calling on people to stay at home from Saturday through May 6 to help prevent the spread of the coronavirus. The authorities designated the 12-day period, which includes Japan's "Golden Week" spring holidays, as "stay-home week."
On Friday, Tokyo Governor Koike Yuriko said the period will be crucial in terms of reducing person-to-person contact by 80 percent – a target set by the central government. She said people's actions will be reflected in the number of coronavirus cases two weeks after that."
www3.nhk.or.jp/nhkworld/en/news/20200425_03/