Oops, it doesn't look like 'anthem at wembley on fa cup semi final day' is a national day..

Other days

ask out your crush

Ask Out Your Crush Day

offer

Offer Day

kale

Kale Day

self appreciation

Self Appreciation Day

pumpkin

Pumpkin Day

Me Day

believe

Believe Day

gum

Gum Day

eat what you want

Eat What You Want Day

pick me

Pick Me Day