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

Other days

bow tie

Bow Tie Day
cat girl

Cat Girl Day
carpenters

Carpenters Day
lash

Lash Day
law

Law Day
bounce

Bounce Day
boy friend

Boy Friend Day
nail polish

Nail Polish Day
cuddle up

Cuddle Up Day
eat what you want

Eat What You Want Day