Oops, it doesn't look like 'lockdown on the exact same day' is a national day..

Other days

hoodie

Hoodie Day
aloxolt

Aloxolt Day
gum

Gum Day
bounce

Bounce Day
believe

Believe Day
lisp

Lisp Day
bonang

Bonang Day
bow tie

Bow Tie Day
coffee

Coffee Day
kiss a brunette

Kiss A Brunette Day