Oops, it doesn't look like 'boat race the masters charlton away to sheffield day' is a national day..

Other days

believe

Believe Day
prosecco

Prosecco Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
bonang

Bonang Day
slime

Slime Day
offer

Offer Day
hiv awareness

Hiv Awareness Day
reading

Reading Day
stress awareness

Stress Awareness Day
bow tie

Bow Tie Day