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

Other days

kiss a brunette

Kiss A Brunette Day
cuddle up

Cuddle Up Day
bow tie

Bow Tie Day
boba

Boba Day
bonang

Bonang Day
first love

First Love Day
lisp

Lisp Day
singles

Singles Day
self care

Self Care Day
carpenters

Carpenters Day