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

Other days

gallery

Gallery Day
ruby

Ruby Day
polyamory

Polyamory Day
buddy

Buddy Day
hoodie

Hoodie Day
self care

Self Care Day
nae nae

Nae Nae Day
slime

Slime Day
my little pony

My Little Pony Day
self appreciation

Self Appreciation Day