Oops, it doesn't look like 'events are being held across europe next week to mark european day' is a national day..

Other days

Chocolate Milkshake Day

Brow Day

Tell A Fairytale Day

Tell Ur Crush You Like Them Day

Lash Day

My Little Pony Day

Bounce Day

Boyfriend Day

Prescription Drug Take Back Day

Kiss A Ginger Day