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

Other days

youth

Youth Day
cuddle up

Cuddle Up Day
tulip

Tulip Day
pumpkin

Pumpkin Day
bounce

Bounce Day
gum

Gum Day
donate your hair

Donate Your Hair Day
pick me

Pick Me Day
self appreciation

Self Appreciation Day
offer

Offer Day