Oops, it doesn't look like 'flag is deemed to be too political a symbol for st andrews day' is a national day..

Other days

hoodie

Hoodie Day
boy friend

Boy Friend Day
boyfriend

Boyfriend Day
self care

Self Care Day
pick me

Pick Me Day
polyamory

Polyamory Day
ride the wind

Ride The Wind Day
me

Me Day
pumpkin

Pumpkin Day
self appreciation

Self Appreciation Day