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

Other days

hannah

Hannah Day
pick me

Pick Me Day
bow tie

Bow Tie Day
unicorn

Unicorn Day
first love

First Love Day
singles

Singles Day
carpenters

Carpenters Day
slime

Slime Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day