Oops, it doesn't look like 'science and technology week opening ceremony day' is a national day..

Other days

bounce

Bounce Day
self appreciation

Self Appreciation Day
boy friend

Boy Friend Day
tulip

Tulip Day
embarrass your best friend

Embarrass Your Best Friend Day
eat what you want

Eat What You Want Day
hiv awareness

Hiv Awareness Day
polyamory

Polyamory Day
donate your hair

Donate Your Hair Day
blanket fort

Blanket Fort Day