International Day Against Homophobia, Biphobia, Interphobia and Transphobia has been observed on 17 May each year since 2005 to raise awareness of LGBTQIA+ rights violations including violence, discrimination, and repression of LGBT communities worldwide. The date was originally selected to commemorate the 1990 decision by the World Health Organisation to remove homosexuality from the International Classification of Diseases. 

The stated goals for IDAHOBIT include to take action, and engage in dialogue with the media, policymakers, public opinion, and wider civil society. The idea behind setting a global date for IDAHOBIT celebrations is that they are globally visible while not requiring them conformation to a particular format or type of action because of the diversity of social, religious, cultural, and political contexts in which rights violations occur. Despite the nature of IDAHOBIT celebrations being very different across the world, they share common themes of pride in oneself, happiness, love and caring within the community, and countering different rampant forms of hate in the world. 

Some of the things the official, Australian IDAHOBIT Day website suggests you can do to show your support and celebrate IDAHOBIT Day at uni or at work are: 

• Go Rainbow! Wear rainbow face paint or clothes on the day, or decorate your office with rainbow. 
• Host an event. No matter how large or small, whether it is a fabulous party or a small, rainbow cupcake afternoon tea, your event will make a difference. 
• Raise awareness. This can be done on IDAHOBIT Day or at any time of the year, whether by inviting a guest speaker, hosting or attending an inclusion training session, or listening to those with lived-experience. 
• Change the world with your generosity. Think about how you can help other LGBTQIA+ young people in need through organisations such as Minus18. 

• Build your knowledge. Learn more about queer identities,  the meaning of pride flags and which one you should use, how to respond when someone comes out to you, or when and how to use pronouns at work.