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

Other days

self care

Self Care Day
cursing

Cursing Day
ruby

Ruby Day
hoodie

Hoodie Day
girl friend

Girl Friend Day
gum

Gum Day
prosecco

Prosecco Day
singles

Singles Day
bubble bath

Bubble Bath Day
aloxolt

Aloxolt Day