Transgender Day of Visibility, and President Joe Biden marked the occasion by becoming the first U.S. president to issue a formal presidential proclamation recognizing the occasion.In the proclamation, Biden praised the transgender community for "generations of struggle, activism, and courage that have brought our country closer to full equality for transgender and gender non-binary people in the United States and around the world."Along with officially designating March 31, 2021, as Transgender Day of Visibility, the president also called upon "all Americans to join in the fight for full equality for all transgender people."But what is this day, also called International Transgender Day of Visibility, Trans Day of Visibility, or simply.