The Bi Visibility Day story:

The annual 23 September celebration started in 1999 as International Celebrate Bisexuality Day, created by three bi activists from the USA – Wendy Curry of Maine, Michael Page of Florida (also well-known as the creator of the bisexual flag), and Gigi Raven Wilbur of Texas. It has also been variously known as Bi Pride Day, Bi Day and Celebrate Bisexuality Day. The use of the name Bi Visibility Day instead started with UK with Jen Yockney, and spread first across Europe and then further around the world.

That year it was marked in the USA, UK and South Africa: this list has grown to more than 30 countries in recent times.

Pan Visibility Day started in 2015 as an online celebration of panromantic and pansexual identities and people.

This website was started in 2001 by Jen Yockney MBE, originally to provide an online information hub about and to promote events each year in the UK to mark Bi Visibility Day. Later its scope was expanded to cover events internationally. In that time it also served as a hub of bi memes to use to mark the date, before sites like Twitter started adding bi gifs and memes to their built-in stocks of images for people to use.