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

Other days

buddy

Buddy Day
kale

Kale Day
azonto is acceptable

Azonto Is Acceptable Day
ruby

Ruby Day
self appreciation

Self Appreciation Day
girl friend

Girl Friend Day
brow

Brow Day
ormille

Ormille Day
offer

Offer Day
tulip

Tulip Day