The International Day Against Homophobia, Transphobia and Biphobia is observed on May 17 and aims to
coordinate international events that raise awareness of LGBT rights violations and stimulate interest in
LGBT rights work worldwide. In the 9th edition, in 2013, commemorations took place in almost 120
countries, in all world regions.
The founders of the International Day Against Homophobia, as it was originally known, established the
IDAHO Committee to coordinate grass-roots actions in different countries, to promote the day and to
lobby for official recognition on May 17. That date was chosen to commemorate the decision to remove
homosexuality from the International Classification of Diseases of the World Health Organization (WHO)