Oops, it doesn't look like 'return the thing you pretended to love day' is a national day..

Other days

pick me

Pick Me Day
hoodie

Hoodie Day
eat what you want

Eat What You Want Day
singles

Singles Day
brow

Brow Day
blanket fort

Blanket Fort Day
nae nae

Nae Nae Day
tell a fairytale

Tell A Fairytale Day
me

Me Day
ask out your crush

Ask Out Your Crush Day