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

Other days

hiv awareness

Hiv Awareness Day
singles

Singles Day
kiss a brunette

Kiss A Brunette Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
offer

Offer Day
youth

Youth Day
healing

Healing Day
cuddle up

Cuddle Up Day
ask out your crush

Ask Out Your Crush Day
nae nae

Nae Nae Day