Each year on 17 May, the international community celebrates the International Day against Homophobia, Transphobia and Biphobia (IDAHOT). While it is a day of celebration of the vast diversity of people's sexualities, gender identities and sex characteristics, and of the legal and social advances concerning lesbian, gay, bisexual, transgender, and intersex (LGBTI) people in the past two decades, it is also a day to raise awareness on existing widespread discrimination and violence in many countries. As in previous years, this article explains the importance of IDAHOT, the highlights of this day and the contribution of equality bodies to the advancement of equality and non-discrimination on the grounds of sexual orientation and gender identity to date.