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

Other days

self care

Self Care Day
unicorn

Unicorn Day
cursing

Cursing Day
boba

Boba Day
law

Law Day
nail polish

Nail Polish Day
ask out your crush

Ask Out Your Crush Day
coffee

Coffee Day
brow

Brow Day
healing

Healing Day