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

Other days

gum

Gum Day

hannah

Hannah Day

pumpkin

Pumpkin Day

special education

Special Education Day

donate your hair

Donate Your Hair Day

self care

Self Care Day

self appreciation

Self Appreciation Day

book

Book Day

boy friend

Boy Friend Day

my little pony

My Little Pony Day