From Wikipedia:  While Intersex Awareness Day on October 26 appears to be celebrated more in English-speaking countries, particularly in North America, Intersex Day of Remembrance has been marked mostly in Europe. Some countries, such as Australia and South Africa, mark both events and the days between as “14 days of intersex.”  It marks the birthday of Herculine Barbin, a French intersex person whose memoirs were later published by Michel Foucault in Herculine Barbin: Being the Recently Discovered Memoirs of a Nineteenth-century French Hermaphrodite.