Oops, it doesn't look like 'security council is organizing a day' is a national day..

Other days

carpenters

Carpenters Day

Emoji Day

ponytail

Ponytail Day

boy friend

Boy Friend Day

self appreciation

Self Appreciation Day

girl friend

Girl Friend Day

prescription drug take back

Prescription Drug Take Back Day

gallery

Gallery Day

azonto is acceptable

Azonto Is Acceptable Day

lumpy rug

Lumpy Rug Day