12 April

Born on this day

1925 Michael Horatio (Mike) Westmacott, British pioneer, who was a member of the successful 1953 Everest expedition and later president of the Alpine Club. He died in 2012, aged 87.
1931 Toshiko Uchida, Japanese lady climber, who ascended Cho Oyu in 2002.
1931 Jan Stryczyński, Polish pioneer, who participated in the first ascent of Kunyang Chhish (7852 m) in 1971.
1951 Emilion (Emili) Duran, Spanish Catalan climber, who ascended Cho Oyu in 2004.
1951 Daniel (Dan) Mallory, Canadian climber, who ascended Everest in 2008.
1952 Enríque (Kike) de Pablo, Spanish Basque climber, who ascended Nanga Parbat in 1983, Makalu in 1984 and K2 in 1994.
1953 Klaus Pongracz, German climber, who ascended Shisha Pangma Central-Peak in 2006.
1954 Jonathan (Jon) Krakauer, American climber, who ascended Everest in 1996.
1955 Sandy Hill Pittman, American lady climber, who ascended Everest in 1996, where she also finished the Carstensz- and Kosciuszko-versions of the Seven Summits.
1955 Enric Dalmau, Spanish Catalan climber, who ascended Broad Peak Central in 1992.
1955 Sungdare, Nepalese Sherpa climber, who ascended Everest five times (1979, 1981, 1982, 1985 and 1988), Dhaulagiri I in 1987 and Cho Oyu in 1988. He died in 1989, aged 34.
1957 Gregory Child, Australian climber, who ascended Gasherbrum IV in 1986, K2 in 1990 and Everest in 1995.
1957 Kenji Iwasawa, Japanese climber, who ascended Everest in 2019.
1958 Tsogzolma Tseren, Mongolian lady climber, who ascended Everest in 2012.
1964 Seth Abderhalden, Swiss climber, who ascended Shisha Pangma Central-Peak in 2006.
1964 Frédéric Vallet, French climber, who ascended Kumbhakarna (aka Jannu) in 1987.
1965 Bittor Amozarrain, Spanish Basque climber, who ascended Gasherbrum II in 2004.
1966 Dianette Marie Wells, American lady climber, who ascended Everest in 2008, where she also finished the Carstensz-version of the Seven Summits.
1969 Mario Audrighettoni, Italian climber, who ascended Everest in 2007.
1969 Georgios Voutiropoulos, Greek climber, who ascended Everest in 2004.
1971 He Ya-Ping, Chinese climber, who ascended Manaslu RP in 2014.
1974 Brendan Lee Davies, British climber, who ascended Everest in 2019.
1974 Benjamin Jonathan Rose, British climber, who ascended Manaslu M in 2022 and Everest in 2024.
1974 Iurii Podvintcev, Russian climber, who ascended Everest in 2024.
1975 Simone Botta, Italian climber, who ascended Cho Oyu in 2006 and Manaslu RP in 2011.
1975 Balkar Singh, Indian climber, who ascended Everest twice (2016 and 2025).
1984 Nivedita Chaudhary, Indian lady climber, who ascended Everest in 2011.
1985 Vinod Singh Negi, Indian climber, who ascended Everest in 2013.
1988 Michał Jan Leksiński, Polish climber, who ascended Everest in 2025.
1989 Liu Huan-Huan, Chinese lady climber, who ascended Cho Oyu in 2023 and Everest in 2024.
1989 Wang Jian, Chinese climber, who ascended Everest in 2024.
1990 Florian Georg Trittler, German climber, who ascended Manaslu RP in 2021.
1990 Yan Hui-Qian, Chinese lady climber, who ascended Everest in 2025.
1993 Trishala Gurung, Indian lady climber, who ascended Everest in 2016.
1993 Pemba Chhiri (a), Nepalese Sherpa climber, who ascended Manaslu M in 2023.
1994 Sange VI, Nepalese Sherpa climber, who ascended Everest in 2024.
1996 Jay Yashodhan Kolhatkar, Indian climber, who ascended Everest in 2022.

First ascent on this day

1897 Tupungato (6570 m) by the British climber Stuart Vines and Matthias Zurbriggen from Switzerland.
1956 Khatung Kang (6484 m) by a Swiss party.

Gone on this day

1982 Hilmar Sturm, Austrian climber, who ascended Nanga Parbat in 1976 and Gasherbrum II in 1979, died on Grossvenediger, aged 42.