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

Other days

cursing

Cursing Day
self care

Self Care Day
boy friend

Boy Friend Day
my little pony

My Little Pony Day
gum

Gum Day
me

Me Day
martini

Martini Day
azonto is acceptable

Azonto Is Acceptable Day
pick me

Pick Me Day
offer

Offer Day