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

Other days

cursing

Cursing Day
bonang

Bonang Day
my little pony

My Little Pony Day
lumpy rug

Lumpy Rug Day
hannah

Hannah Day
youth

Youth Day
boba

Boba Day
kale

Kale Day
kiss a ginger

Kiss A Ginger Day
frozen yogurt

Frozen Yogurt Day