Oops, it doesn't look like 'mourning and cancel independence day' is a national day..

Other days

chocolate milkshake

Chocolate Milkshake Day
coffee

Coffee Day
one

One Day
self appreciation

Self Appreciation Day
raise awerness of zeus

Raise Awerness Of Zeus Day
self care

Self Care Day
aloxolt

Aloxolt Day
carpenters

Carpenters Day
emoji

Emoji Day
blanket fort

Blanket Fort Day