Nepal today celebrated the first conquest of Mount Everest 64 years ago and honoured a 44-year-old Nepalese mountaineer who broke her own world record for the most number of Everest summits by a woman after she scaled the world's tallest peak for the eighth time this year. <br/><br/>New Zealander Sir Edmund Hillary and Sherpa Tenzing Norgay became became the first persons to climb the 8,848-metre peak on May 29, 1953. <br/><br/>A function was organised at the Nepal Tourism Board in Kathmandu to mark the occasion and the 10th International Everest Day which saw participation from internationally acclaimed mountaineers, including Italian climber Reinhold Messner, who scaled the Everest for the first time without oxygen.