Oops, it doesn't look like 'cemetery on a sunny and hot day' is a national day..

Other days

raise awerness of zeus

Raise Awerness Of Zeus Day
ruby

Ruby Day
promposal

Promposal Day
kale

Kale Day
hoodie

Hoodie Day
hiv awareness

Hiv Awareness Day
ponytail

Ponytail Day
stress awareness

Stress Awareness Day
first love

First Love Day
self appreciation

Self Appreciation Day