1953 Edmund Hillary and Sherpa Tenzing Norgay become the first people to reach the summit of Mount Everest, on Tenzing Norgay's (adopted) 39th birthday.
1975 Junko Tabei becomes the first woman to reach the summit of Mount Everest.
1978 First ascent of Mount Everest without supplemental oxygen, by Reinhold Messner and Peter Habeler.
1978 Wanda Rutkiewicz is the first Pole and the first European woman to reach the summit of Mount Everest.
1996 A "rogue storm" near the summit of Mount Everest kills eight climbers, making this the deadliest day in the mountain's history. Among the dead are experienced climbers Rob Hall and Scott Fischer, both of whom were leading paid expeditions to the summit.
1996 The 1996 Everest disaster: on a single day eight people die during summit attempts on Mount Everest .
2001 Mountain climbing: 15-year-old Sherpa Temba Tsheri becomes the youngest person to climb to the top of Mount Everest.
2001 32-year-old Erik Weihenmayer, of Boulder, Colorado, becomes the first blind person to reach the summit of Mount Everest.