Oops, it doesn't look like 'flag or on what day' is a national day..

Other days

cuddle up

Cuddle Up Day
bonang

Bonang Day
first love

First Love Day
ride the wind

Ride The Wind Day
nail polish

Nail Polish Day
pumpkin

Pumpkin Day
cursing

Cursing Day
bow tie

Bow Tie Day
hannah

Hannah Day
lash

Lash Day