The Regulations of the UNJSPF were adopted by the United Nations General Assembly by resolution 248 (III) on 7 December 1948; the Regulations became effective on 23 January 1949, and have been amended by the Assembly several times since then, following recommendations by and consultation with the United Nations Joint Staff Pension Board. Current UNJSPF Regulations and Rules are available here.
Hence, 7 December 2023 marks 75 years since the approval of the UNGA resolution establishing the Fund. The Fund will be celebrating its 75th anniversary starting from this date throughout December 2024 test.