Oops, it doesn't look like 'why do you even need a specific named day' is a national day..

Other days

ask out your crush

Ask Out Your Crush Day
lash

Lash Day
artists

Artists Day
youth

Youth Day
mean girls

Mean Girls Day
self care

Self Care Day
self appreciation

Self Appreciation Day
special education

Special Education Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
bounce

Bounce Day