On 21 May 2021, the government announced that the existing coronavirus-related state of emergency in nine prefectures will be expanded to include Okinawa from 23 May until 20 June. Under the order, restaurants must close by 2000 local time (1100 UTC), and authorities are requesting that tourists cancel planned trips to the prefecture. In related developments, authorities approved the use of COVID-19 vaccines developed by Moderna and AstraZeneca