Oops, it doesn't look like 'strawberries and cream strawberries and cream day' is a national day..

Other days

african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
kale

Kale Day
bow tie

Bow Tie Day
self appreciation

Self Appreciation Day
lost sock memorial

Lost Sock Memorial Day
brow

Brow Day
boy friend

Boy Friend Day
martini

Martini Day
tulip

Tulip Day
prosecco

Prosecco Day