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

Other days

comfy

Comfy Day
azonto is acceptable

Azonto Is Acceptable Day
pick me

Pick Me Day
nail polish

Nail Polish Day
first love

First Love Day
self care

Self Care Day
lash

Lash Day
nae nae

Nae Nae Day
gum

Gum Day
china

China Day