12 September

Born on this day

1937 Hans Zimmermann, Swiss climber, who ascended Dhaulagiri I in 1980.
1942 James Alan Matter, American climber, who ascended Cho Oyu in 2011.
1948 Georges Frey, French climber, who ascended Cho Oyu in 1994.
1949 José Delgado, Venezuelan climber, who ascended Cho Oyu in 1994.
1950 Syoichi Sekiya, Japanese climber, who ascended Dhaulagiri I in 1993.
1950 James (Jim) Frush, American climber, who ascended Cho Oyu in 1986.
1960 Kim Young-Hak, Korean climber, who ascended Cho Oyu in 2000.
1960 Gela Otarashvili, Georgian climber, who ascended Dhaulagiri I in 1995 and Lhotse in 2000.
1961 Michael Smith, British climber, who ascended Shisha Pangma Central-Peak in 1994 and Everest twice (1995 and 1999).
1962 Megan Catherine Delahanty, American lady climber, who ascended Everest in 2009. She also finished the Carszensz-version of the Seven Summits in 2011.
1963 Simon A. Holland, Australian climber, who ascended Cho Oyu in 2002 and Everest in 2008.
1965 Matthias Paletta, German climber, who ascended Cho Oyu in 2003.
1965 Vance L. Cook, American climber, who ascended Everest in 2008 and Makalu in 2014.
1969 Mark R. Sedon, climber from New Zealand, who ascended Cho Oyu in 2005 and Everest in 2007.
1970 Aparna Arvind Prabhudesai, Indian lady climber, who ascended Everest in 2017.
1972 Kara Lynn Ann Stinson, American lady climber, who ascended Everest in 2019.
1974 Fergal Corrigan, British (Northern Irish) climber, who ascended Everest in 2006.
1974 Ci Luo (aka Tselo), Tibetan climber, who ascended Everest four times (1998, 2007, 2008 and 2020).
1977 Jason M. Baldy, American climber, who ascended Everest in 2019.
1978 Andrei Zaitsev, Russian climber, who ascended Manaslu M in 2023.
1979 Sushma Kaushik, Indian lady climber, who ascended Everest in 2011.
1979 Andrii Vergeles, Ukrainian climber, who ascedned Gasherbrum II in 2017.
1980 Lara Herbert, British lady climber, who ascended Makalu in 2008.
1981 Irena Kharazova, Russian lady climber, who ascended Everest in 2016.
1981 Rebecca Louise Smith, British lady climber, who ascended Everest in 2022.
1983 Samuel Langmead, British climber, who ascended Everest in 2018.
1984 Hong Dan-Hong, Chinese lady climber, who ascended Everest in 2024.
1989 Yogesh Singh, Indian climber, who ascended Everest in 2018.
1994 Chhiring (a), Nepalese Sherpa climber, who ascedned Dhaulagiri I in 2017.
1996 Vikas Mahadeo Soyam, Indian climber, who ascended Everest in 2018.
1996 Samuel Ellis Williams, British climber, who ascended Everest in 2024.
1996 Hsu Yin-Kuei, Taiwanese climber, who ascended Manaslu M in 2025.
1996 Li Li-Li, Chinese lady climber, who ascended Manaslu M in 2025.

First ascents on this day

1952 Manirang (6593 m) by a South African party.
1965 Darban Zom (7110 m) by an Austro-German party.

Gone on this day

1994 Mingma Norbu, Nepalese Sherpa climber, who ascended Shisha Pangma Central-Peak three times (twice within two days in 1990 and 1992), Everest in 1991 and Cho Oyu three times (1991, 1992 and 1993). He died on Everest by an avalanche, aged 23.