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

Other days

singles

Singles Day
first love

First Love Day
aloxolt

Aloxolt Day
ride the wind

Ride The Wind Day
martini

Martini Day
promposal

Promposal Day
believe

Believe Day
ask out your crush

Ask Out Your Crush Day
brow

Brow Day
tulip

Tulip Day