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

Other days

ride the wind

Ride The Wind Day
coffee

Coffee Day
get funky

Get Funky Day
offer

Offer Day
tell a fairytale

Tell A Fairytale Day
carpenters

Carpenters Day
gum

Gum Day
bounce

Bounce Day
first love

First Love Day
ruby

Ruby Day