Oops, it doesn't look like 'srebrenica memorial day' is a national day..

Other days

slime

Slime Day

ask out your crush

Ask Out Your Crush Day

Emoji Day

bounce

Bounce Day

bonang

Bonang Day

boy friend

Boy Friend Day

aloxolt

Aloxolt Day

girl friend

Girl Friend Day

donate your hair

Donate Your Hair Day

pumpkin

Pumpkin Day