Oops, it doesn't look like 'historical site on the same day' is a national day..

Other days

kale

Kale Day
ride the wind

Ride The Wind Day
boy friend

Boy Friend Day
boba

Boba Day
ruby

Ruby Day
bounce

Bounce Day
comfy

Comfy Day
cursing

Cursing Day
bonang

Bonang Day
law

Law Day