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

Other days

coffee

Coffee Day

law

Law Day

prosecco

Prosecco Day

buddy

Buddy Day

offer

Offer Day

tell a fairytale

Tell A Fairytale Day

Emoji Day

bonang

Bonang Day

lash

Lash Day

nail polish

Nail Polish Day