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

Other days

buddy

Buddy Day
hiv awareness

Hiv Awareness Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
martini

Martini Day
coffee

Coffee Day
self care

Self Care Day
donate your hair

Donate Your Hair Day
raise awerness of zeus

Raise Awerness Of Zeus Day
tulip

Tulip Day
my little pony

My Little Pony Day