On this day At 11:30 a.m. on May 29, 1953, Edmund Hillary of New Zealand and Tenzing Norgay, a Sherpa of Nepal, become the first explorers to reach the summit of Mount Everest. On this day in the year 1973, On May 29. 1973, City Councilman Tom Bradley defeated the incumbent Sam Yorty to become the first L.A. Mayor of African American ancestry, as well as the first black mayor of a major US city. Every year on 29 May, the United Nations commemorates the International Day of United Nations Peacekeepers. On this day, we pay tribute to all the women and men who have served as military, police or civilians in UN Peacekeeping operations. Two men, Vince Autin and Bruno Boileau, became the first couple to be married in Montpellier, France. There was tight security at the event as the new law had conjured up violent protests and was considered controversial in the country.