1st » Comet Hale-Bopp is seen passing over perihelion.
3rd » The Thalit massacre begins in Algeria; all but one of the 53 inhabitants of Thalit are killed by guerrillas.
13th » Tiger Woods becomes the youngest golfer to win the Masters Tournament.
19th » The Red River Flood of 1997 overwhelms the city of Grand Forks, North Dakota. Fire breaks out and spreads in downtown Grand Forks, but high water levels hamper efforts to reach the fire, leading to the destruction of 11 buildings.
22nd » Haouch Khemisti massacre in Algeria 93 villagers killed.
22nd » The Japanese embassy hostage crisis ends in Lima, Peru.
23rd » Omaria massacre in Algeria: Forty-two villagers are killed.
29th » The Chemical Weapons Convention of 1993 enters into force, outlawing the production, stockpiling and use of Chemical warfare known as chemical weapons by its signatories.