Oops, it doesn't look like 'rifle association claimed late day' is a national day..

Other days

carpenters

Carpenters Day
self care

Self Care Day
lumpy rug

Lumpy Rug Day
tulip

Tulip Day
fiancee

Fiancee Day
my little pony

My Little Pony Day
blanket fort

Blanket Fort Day
azonto is acceptable

Azonto Is Acceptable Day
self appreciation

Self Appreciation Day
promposal

Promposal Day