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

Other days

bonang

Bonang Day
nail polish

Nail Polish Day
ponytail

Ponytail Day
unicorn

Unicorn Day
blanket fort

Blanket Fort Day
slime

Slime Day
kiss a ginger

Kiss A Ginger Day
kiss a brunette

Kiss A Brunette Day
nae nae

Nae Nae Day
offer

Offer Day