1919 - Mahatma Gandhi organizes a day of "Prayer and Fasting" in response to the killing of Indian protestors in Amritsar, in the Jallianwala Massacre by British colonial troops three days earlier.
1994 - Hutusoldiers in Rwanda begin the Massacre of Nyarubuye on the Tutsi people. By the time it ends the next day, around 2,000 people have been killed.
2013 - A magnitude 7.8 earthquake strikes southeast Iran, near the border with Pakistan. Damage is reported on both sides of the border.
2014 - The MV Sewolferry, travelling from Incheon to Jeju Island off the south coast of South Korea, sinks near Jindo Island off the southwest coast, killing 295 people.
2014 - Scientists announce the possible discovery of a new moon of Saturn being created out of its rings.
2017 - Turkey holds a referendum on changing the constitution to that of a Presidential republic; Results indicate just over half of voters support the proposal.