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

Other days

lumpy rug

Lumpy Rug Day
unicorn

Unicorn Day
cat girl

Cat Girl Day
bow tie

Bow Tie Day
hoodie

Hoodie Day
cursing

Cursing Day
self appreciation

Self Appreciation Day
ruby

Ruby Day
bonang

Bonang Day
self care

Self Care Day