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

Other days

martini

Martini Day
cuddle up

Cuddle Up Day
brow

Brow Day
bonang

Bonang Day
hot chocolate

Hot Chocolate Day
ruby

Ruby Day
promposal

Promposal Day
self appreciation

Self Appreciation Day
kiss a ginger

Kiss A Ginger Day
coffee

Coffee Day