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

Other days

aloxolt

Aloxolt Day
first love

First Love Day
unicorn

Unicorn Day
bow tie

Bow Tie Day
buddy

Buddy Day
pumpkin

Pumpkin Day
cat girl

Cat Girl Day
blanket fort

Blanket Fort Day
comfy

Comfy Day
youth

Youth Day