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

Other days

boba

Boba Day
stud

Stud Day
kiss a ginger

Kiss A Ginger Day
brow

Brow Day
lost sock memorial

Lost Sock Memorial Day
offer

Offer Day
believe

Believe Day
cuddle up

Cuddle Up Day
book

Book Day
bonang

Bonang Day