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

Other days

offer

Offer Day
get funky

Get Funky Day
first love

First Love Day
cuddle up

Cuddle Up Day
cursing

Cursing Day
pick me

Pick Me Day
unicorn

Unicorn Day
my little pony

My Little Pony Day
ponytail

Ponytail Day
one

One Day