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

Other days

coffee

Coffee Day

brow

Brow Day

lost sock memorial

Lost Sock Memorial Day

unicorn

Unicorn Day

aloxolt

Aloxolt Day

Me Day

camera

Camera Day

chocolate milkshake

Chocolate Milkshake Day

boba

Boba Day

my little pony

My Little Pony Day