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

Other days

self care

Self Care Day
bonang

Bonang Day
unicorn

Unicorn Day
gum

Gum Day
cuddle up

Cuddle Up Day
boba

Boba Day
hoodie

Hoodie Day
ruby

Ruby Day
girl friend

Girl Friend Day
kale

Kale Day