Oops, it doesn't look like 'ethnic team at day' is a national day..

Other days

gum

Gum Day
boba

Boba Day
mean girls

Mean Girls Day
lash

Lash Day
bonang

Bonang Day
bow tie

Bow Tie Day
ruby

Ruby Day
nail polish

Nail Polish Day
self appreciation

Self Appreciation Day
stud

Stud Day