June 6th
As some of you may know, June is pride month. Every day is another gender ir sexuality, and June 6th is for Omnisexuals.

January 3rd
this wasnt really decided amoung many people, but decided between Omnisexuals. January 3rd is Omni Awareness day, A day to let others know we exist

March 21st
This was pretty clever, i must say. Take the word Omni from Omnisexual

And reverse it to whatever degree the picture below me is

it says
03/21

March, 21st

Perfecto.
March 21st is our Omni Day, And i love it