May 21, 2004 in History

Day of the Week: Friday

Events in History

  • Sherpa Pemba Dorjie climbs Mount Everest in 8 hours 10 minutes, breaking his rival Sherpa Lakpa Gelu's record from the previous year.
  • Stanislav Petrov awarded World Citizen Award for averting a potential nuclear war in 1983 after correctly guessing Russian early warning system at fault