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

Other days

reading

Reading Day
slime

Slime Day
tell a fairytale

Tell A Fairytale Day
youth

Youth Day
bow tie

Bow Tie Day
cuddle up

Cuddle Up Day
china

China Day
lumpy rug

Lumpy Rug Day
ruby

Ruby Day
law

Law Day