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

Other days

cuddle up

Cuddle Up Day
bow tie

Bow Tie Day
first love

First Love Day
promposal

Promposal Day
self care

Self Care Day
youth

Youth Day
pumpkin

Pumpkin Day
eat what you want

Eat What You Want Day
emoji

Emoji Day
bounce

Bounce Day