Oops, it doesn't look like 'historical day' is a national day..

Other days

ruby

Ruby Day
pampering

Pampering Day
boba

Boba Day
my little pony

My Little Pony Day
tulip

Tulip Day
ponytail

Ponytail Day
gallery

Gallery Day
one

One Day
eat what you want

Eat What You Want Day
ride the wind

Ride The Wind Day