Timeline for April 2015

The emperor and empress of Japan bow at a monument commemorating those who died in World War II during a visit to Peleliu in Palau on April 9, 2015. (© Jiji)

A Japanese maglev train sets a world record of 603 kph during a test run in Tsuru, Yamanashi Prefecture on April 21, 2015. (© Jiji)

Officials place a sheet over a drone found on the roof of the prime minister’s residence in Tokyo on April 22, 2015.