( CNN) Nic Sakurai was among the first people outside the Benning Road Department of Motor Vehicle office in Washington on Tuesday morning at 7:15.

Sakurai had created a Facebook event and invited others to join the historic day: They would become the first people in the United States to choose X as their gender marker instead of male or female on driver’s permissions and identification cards.

The X signifies gender neutral, the most wonderful designation for people like Sakurai who don’t identify as male or girl.