Oops, it doesn't look like 'executive committee world environmental health day' is a national day..

Other days

me

Me Day
emoji

Emoji Day
ormille

Ormille Day
self appreciation

Self Appreciation Day
bow tie

Bow Tie Day
bounce

Bounce Day
my little pony

My Little Pony Day
brow

Brow Day
blanket fort

Blanket Fort Day
special education

Special Education Day